Answer the questions below for an element that has the electron configuration 1s2 2s2 2p6 3s2 3p6 4s1. A. What is the symbol for this element? B. What is the atomic number of this element? C. How many unpaired electrons

82,590 results
  1. chemistry

    Identify the neutral element represented by this excited-state electron configuration, then write the ground-state electron configuration for that element. Excited State: 1s2 2s2 2p2 3s1 Element Symbol: ? Ground State: ?

  2. Chemistry...Help!!

    I don't even know how to start this...The valence electron configurations of several atoms are shown below. How many bonds can each atom make without hybridization? 1. Si 3S2 3P2 2. P 3S2 3P3 3. F 2S2 2P5

  3. CHEM

    Consider the following neutral electron configurations in which 'n' has a constant value. Which configuration would belong to the element with the most negative electron affinity, E-ea? a) ns^2 b) ns^2 np^2 c) ns^2 np^5 d) ns^2 np^6 would the answer be

  4. AP Chemistry

    Which of the following electron configurations correspond to an excited state? Identify the atoms and write the ground-state electron configuration where appropriate. If the configuration is a noble gas, enter the noble gas in brackets, for example [Ne]

  5. Configuration

    What is the electronic configuration of carbide C-4? Thought it was 1s2 2s2 sp2. Thanks from Sheryl C is atomic number 6. Electronic configuration of the neutral atom is 1s2, 2s2, 2p2. The carbide ion, C^-4, has four more electrons. So the extra four

  6. Chemistry

    1) What is the atomic # for selenium? 34 2) Write the full electron configuration for selenium following the (n+l) rule? I am not sure what is meant by n+l 3) write the electron configuration, grouping electrons by their "n" values. [Ar]3d10 4s2 4p4 Are

  7. Chemistry

    How many valence electrons does molybdenum have? (give only 1 answer) Go to this site and look for the electrons available in the outside shells. Click on element #42 and scroll down the menu on the left side until you come to electron configuration.

  8. chemistry

    How do i calculate the effective nuclear charge of a 3d electron of copper? what is the zeff. for a electron in the 3d orbital of copper. i looked up the answer to be 13.20, but i calculated 13.05 this is my work: (1s2)(2s2 2p6)(3s2 3p6)(3d10)(4s1)

  9. chemistry

    What is the element with an electron configuration of 1s22s22p63s23p64s23d7?

  10. Chemistry

    Which is not a ground state electron configuration? A. 1s2 B. 1s2 2p1 C. 1s2 2s2 D. 1s2 2s2 2p1

  11. Chemistry

    Electron configuration for phosphorus is 1s2 2s2 2p6 3s2 3p3. So the number of electron must be 15 , right ? But , what if m = 1 ? Does it effect the number of electron ?

  12. Chem help

    Answer the questions below for an element that has the electron configuration 1s2 2s2 2p6 3s2 3p6 4s1. A. What is the symbol for this element? B. What is the atomic number of this element? C. How many unpaired electrons does an atom of this elelemt have?

  13. chemistry

    which element has the ground-state electron configuration [Kr]5s^2 4d^10 5p^4

  14. Chemistry

    Metals lose electrons under certain conditions to attain a noble-gas electron configuration. How many electrons must be lost by the element Ca? Is it 2 e^-? Which noble-gas electron configuration is attained in this process? argon radon krypton xenon

  15. Lauren

    Write the electron configuration of Sn and Sn2+ Give the electron configuration of Cu+ and Cu2+

  16. Chemistry

    I don't understand what valence electrons and core electrons are. Ex: Se = 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p4 What makes 4s2 and 4p4 valence electrons and the rest core

  17. Chemistry

    An element with the symbol Z has the electron configuration 2.8.6. Which species is this elrment most likely to form? A. The ion Z 2+ B. The ion Z 6+ C. The compound H subscript 2 Z D. The compound Z subscript 6 F Which ionization requires the most energy?

  18. Chemistry

    Element x has the highest first electron affinity in its period, the ground state electron configuration of its common is: [Kr] 5s2 4d10 5p6 Element Y is the second largest element in its period; its valence electron are in orbital(s) that have n= 6. What

  19. Chemistry

    The electron configuration for Europium? I think it's 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f7 Is that right? I'm not sure if I did it right with the f block.

  20. Physics

    The electronic configuration of an element X is: 1s² 2s² 2p6 3s2 3p5 Deduce the atomic number of X To what group does it belong Give two properties of the group to which the element X belong. Identify element X by name. Write a balanced equation to

  21. Chemistry HELP ASAP

    A Gouy balance is used to determine the magnetic susceptibility of a substance. A strong electromagnet is placed next to the sample, which is on a balance. If the sample is paramagnetic, the mass reading of the balance will increase when the field is

  22. Chemisrty

    Answer the questions below for an element that has the electron configuration 1s2 2s2 2p6 3s2 3p6 4s1. A. What is the symbol for this element? B. What is the atomic number of this element? C. How many unpaired electrons does an atom of this elelemt have?

  23. Chemistry Periodic Trends

    The electron affinities of the elements from aluminum to chlorine are -44, -120, -74, -200.4, and -384.7 kJ/mol respectively. Rationalize the trend in these values. Electron affinity is the energy absorbed (endothermic) or emitted (exothermic) by the

  24. Chemistry

    Which element has the following electron configuration: [Xe] 6s^(2) 5d^(1) 4f^(1)

  25. Chemistry

    Given the following three electron configurations: 1s2 2s2 2p5 How many core electrons does this element have? A. 4 B. 5 C. 9 D. 2

  26. CHEMISTRY

    An element X with electronic configuration 2,8,2 ionises to a configuration of 2,8 when it combines with another element Y of configuration 2,8,7? (i) state the type of bonding formed between the two elements. (ii) write a simple ionic equation to

  27. Chemistry

    Which element's 4+ ion would have the following electron configuration? [Kr]4d^10

  28. chemistry

    which element has the ground-stat electron configuration [Ar]4s^2 3d^10?

  29. Chemistry (very simple)

    Why does Ga have one unpaired electron? Such as for example P has three unpaired electrons (because of its electron configuration) but I don't understand why Ga has one unpaired electron - wouldn't it be five (electron configuration)? Thank you!

  30. Chemistry

    Use these answers for questions 4 - 7. (A) 1s2 2s22p5 3s23p5 (B) 1s2 2s22p6 3s23p6 (C) 1s2 2s22p62d10 3s23p6 (D) 1s2 2s22p6 3s23p63d5 (E) 1s2 2s22p6 3s23p63d3 4s2 4. An impossible electronic configuration 5. The ground-state configuration for the atoms of

  31. chemistry

    how many unpaired electrons are in this configuration 1s2 2s2 2p6 3s2 3p3

  32. Chemistry

    What element has the final electron configuration as 3s2 3p4?

  33. CHEM

    Confirm that the experimentally observed electronic configuration of K, 1s2 2s2 2p6 3s2 3p6 4s1 is energetically more stable than the configuration 1s2 2s2 2p6 3s2 3p6 3d1. ______ i know that it is energetically favorable for the electron to occupy the 4s

  34. Chemistry(Please help)

    For a carbon atom that is sp2 hybridized, I understand that the electron configuration would be Yes, 1s2 2s1 2p3 which is a 2s up arrow,and 3 orbtials that are 2p up arrows but then since the four bonds hybridize to form four sp3 hybrid bonds how do I

  35. Chemisty

    Answer the questions below for an element that has the electron configuration 1s2 2s2 2p6 3s2 3p3. A. What is the symbol for this element? B. What is the atomic number of this element? C. How many unpaired electrons does an atom of this elelemt have? D.

  36. Chem

    Which of the following is a correct electron configuration? A 1s2 2s2 2p5 3s2 3p6 4s2 3d10 4p3 B 1s2 2s2 2p6 3s2 3p6 4s2 4p3 C 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p3 D 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p3 C?

  37. Chemistry

    Name an element that has 5 electrons in the third energy level. How do i determine the third energy level Row three on the periodic table is third energy level If memory serves me will, it begins with sodium. Ok. iS Krypton the electron configuration that

  38. AP CHEM HELP!

    How many unpaired electrons are present in each of these species? (a) 1s22s23p1 1 ground-state= __________ (b) 1s2 2s2 2p6 0 ground-state=______________ I Cant get the ground state config i think there might be somethign wrong...

  39. Chemistry

    1s2 2s2 2p6 3s2 3p1

  40. Chemistry

    You write the electron structure like this. 1s2 2s2 2p6 3s2 3p6 3d10 4s1 is the neutral Cu atom. Remove the two outside electrons to make the Cu^+2 ion. That leaves us with 3d9 as the outside and since that is an odd number, one electron must be unpaired.

  41. Chemistry

    6p2 is the last one of the electron configuration. I think the element is Pb. How do I know the charge of the element?

  42. Chemistry

    Where Can i find drawing of the electron dot structure of the following atoms. Argon,Calcium,Iodine www.webelements.com will give you the electron configuration. Scroll down the menu on the left side. The electron dot structure is done this way: Write the

  43. Chemistry

    I am having trouble figuring out the electron configuration for a carbon atom when it is in a molecule such as methane. I know that the ground state configuration for carbon is 1s2 2s2 2p2 but im not sure how to figure it out when it is bonded to other

  44. chemistry

    Ca + Br2 --> CaBr2 its synthesis and the reason the reaction happens is stable electron configuration but i don't understand why. Responses chemistry - DrBob222, Wednesday, January 21, 2009 at 10:06pm Synthesis because it's two elements combining to form a

  45. Chem Electron Config

    S2- Cu+ Sn2+ O2- A 1s22s22p63s23p63d10 B. 2s2 C. 1s22s22p63s23p4 D. 1s22s22p63s23p63d104s1 E. 1s2 F. 1s22s22p63s23p64s23d104p65s24d10 G. 1s22s22p63s23p64s23d104p64d105s25p2 H. 1s22s22p4 I. 1s22s22p6 J. none of the above Choose from the list the correct

  46. Science

    A chemical element with the symbol X has the electron arrangement 2,8,6 (electron configuration 1s2 2s2 2p6 3s2 3p4). Which chemical species is this chemical element most likely to form?

  47. Chemistry

    What is the symbol for the element whose electron configuration ends with 4p6?

  48. chemistry

    the electronic configuration at an element *is 1s2 2s2 2p6 3s2 3p2 a-deruse the. atomic numbers of* b- to which group does * belongs c- given two properties of the group to which the element*belongs d- identity elements* by name e- write balanced equation

  49. chemistry

    1.) Which element has one of the highest electronegativities on the periodic table? 2.) Which element has one electron in a 3p orbital? 3.) Which element tends to gain one electron?

  50. Chemistry

    How many unpaired electrons are there in an atom of an element with the following configuration?1s2 2s2 2p6. A.0 B.1 C2 D6 E8

  51. CHEMISTRY: URGENT

    1) the element Q has the electronic configuration 1S2, 2S2, 2p6, 3s2, 3p6, 4s2 3d10, 4p1. Write the atomic #. Q exist as 69Q and 71Q. What is the significance of the 2 #'s. What does it mean. B) find the atomic mass if 69Q is 60% anf 71Q is 40%

  52. Chemistry

    How can you find out how many unpaired electrons are present in gaseous Co3+ ion in its ground state? According to the NBS Circular 467 "Atomic Energy Leves", Co(3+) has 24 electrons with structure 1s(2), 2s(2), 2p(6),3s(2), 3p(6), 3d(6), and spectroscopic

  53. Chemestry 095

    Write the electron configuration for the following ground state atoms and ions. strontium+2 ion; iron element; selenium -2 ion; gallium +3 ion; and tin element.

  54. Chemistry

    Write the shorthand version of the electron configuration of an element that has eight electrons. I came up with the configuration as 1s^2-2s^2-2p^4, but how do I write the shorthand version of an element that has not been specified?

  55. Chemistry

    How do you write the electron configuration of Curium (Cm) and copper (Cu)? I'm confused of writing electron configuration with d and f orbitals. Please help. Thanks.

  56. Chemistry

    WHy is Copper an exception in electron configuration? Copper is not an exception except in our minds. The exception lies in our attempt to explain electron configurations. In the case of Cu and Cr for the 3d series, they don't fall into our neat pattern;

  57. Chemistry

    The electronic configuration of an element ,X , is represented by 1s2 2s2 2p6 3s2 3p6 3p6 4s2 and 3d3. Determine the atomic number of X

  58. Chemistry

    Element X has the highest first electron affinity in its period; the ground state electron configuration of it's most common ion is [Kr] 5s^2 4d^10 5p^6 a Element Y is the second largest element in it's period; it's valence electrons are in orbital(s) that

  59. chemistry

    How can I determine which elements have higher first and second ionization energies than other elements? Also, how can I find the number of valence electrons from the electron configuration? Also, how can I use the electron configuration to find out what

  60. Chemistry

    Based on: Bromine: [Ar] 3d10 4s2 4p5 Iodine: [Kr] 4d10 5s2 5p5 Chlorine: [Ne] 3s2 3p5 what are the chemical property similarities based on the electron configuration?

  61. Chemistry Electron Configuration Questions

    I do not understand anything about electron configuration. How do you figure out if the element is in P,D,S,orF? What do the subscripts represent? What is a subshell? I am so confused!! You figure it out by using the Aufgau principle, placing electrons in

  62. Chemistry

    What is the electron configuration of the complex: Fe(C2O4)3 3- I am not really quite sure how to go about doing this and whether the electron configuration are supposed to be for each atom.

  63. Chemistry

    What is the electron configuration of the element with 27 protons? Is it 1s2 2s2 2p6 3s2 3p6 3d7 4s2 or is that wrong?

  64. Chemistry

    An element X with the electronic configuration: 1s2, 2s2, 2p6, 3s2, 3p3. Derive the chemical formula of the compound formed.

  65. Chemistry

    Which is not a ground state electron configuration? A. 1s2 B. 1s2 2p1 C. 1s2 2s2 D. 1s2 2s2 2p1

  66. Chemistry

    ONe day, you were walking along the road with your friend and saw a piece of solid that you've never seen before. You were curious about the identity of the substance so you tried to give it to the Department of Science. You found out from them that it is

  67. chemistry

    Hi! Can somebody please help me with a coupla questions? Thanks loads!!! Describe physical and chemical properties of isotopes of the same element. Given the electron configuration of an element, how can you tell whether it represents the element in its

  68. chem

    There are several exceptions to the octet rule found along the transition and rare earth metal sections. These exceptions are tied to the observed phenomenon that atoms are more stable if orbital systems are either whole or half filled. In other words, the

  69. chemistry

    How can i explain the electron configuration for silcon. I Know it's [Ne].3s2.3p2 but how do i explain it. Si has 14 electrons. The fill by low energy level to higher is 1s2, 2s2, 2p6, 3s2, 3p2 I don't know what else there is to explain. If this isn't the

  70. CHEM

    I just have one more question regarding electron configurations for the following ions: Mo^3+ V^3+ I cannot understand why my answers are not working. Not listing as ground-state configs, but as full e- configs: shouldn't Mo^3+ be: 1s2, 2s2, 2p6, 3s2, 3p6,

  71. science

    1s2 2x2 2p6 3s2 3p6 is the electron configuration ofr for which ion? I believe your 2x2 should be 2s2. You have 18 electrons in filled orbitals. That could be a +1 charged element 19 (K+) or a +2 charged element 20 (Ca++) \, for example. In either case, it

  72. chemistry

    how many unpeeled electrons are in this configuration 1s2 2s2 2p6 3s2 3p3

  73. Chemistry

    Which is not a ground state electron configuration? A. 1s2 B. 1s2 2p1 C. 1s2 2s2 D. 1s2 2s2 2p1

  74. Chemistry

    Which is not a ground state electron configuration? A. 1s2 B. 1s2 2p1 C. 1s2 2s2 D. 1s2 2s2 2p1

  75. college Chemistry

    Which is not a ground state electron configuration? A. 1s2 B. 1s2 2p1 C. 1s2 2s2 D. 1s2 2s2 2p1

  76. Science

    Why can the electronic configuration of some transition element not be written like this;Mg=(Ne)3s2

  77. chemistry

    Which element is represented by the excited state electron configuration: 1s22s22p53s23p4 s p si ne

  78. chemistry

    what is the complete electron configuration and the abbreviated electron configuration of copper (II) ion? what is the complete electron configuration and the abbreviated electron configuration of bromide ion?

  79. Chemistry-electron configuration CONFUSED!!

    I need help with electron configuration. I do not understand any of it!! I bombed a test ad have a chance to retake it. Any info on electron configuration is great! It is really hard to help you if we don't know what is wrong. Here is a site that may help.

  80. Chemistry

    From the information below, identify element X. a. The wavelength of the radio waves sent by an FM station broadcasting at 97.1 MHz is 30.0 million (3.00 e7) times greater than the wavelength corresponding to the energy difference between a particular

  81. Chem- quantum question

    Hi. My teacher is giving us a test tomorrow on quantum numbers and Iunderstand it except for Noble gas configuration. I saw the question below on it but it's not really what I need to know so any help would be great. :) Question: My teacher said he'll give

  82. Chem:DrBob

    Dr.Bob, yesterday you told me : "The best way I think is to show examples. 12Mg = 1s2 2s2 2p6 3s2 Here the 1s orbital is lower than the 2s and they are lower than the 3s etc." 19K = 1s2 2s2 2p6 3s2 3p6 3d0 4s2 Here the 1s is lower than the 2s and those are

  83. Chemistry

    Why is magnesium atom smaller than atoms of both sodium and calcium? The location of the outer electrons for Mg are in closer to the nucleus than of Sodium or Calcium. To add to the correct answer from Bob Pursley, consider the electronic configurations.

  84. Chemisty

    how do you determine how many electrons are in the highest occupied energy level? For example many electrons are in the highest occupied energy level Group 3A Count them up. For example, you know 1s2, 2s2, 2p6, 3s2, 3p6, etc etc. You can go to

  85. science-chem

    I am really confused on hybridization and how to do the orbital drawings. For example for BeF2: The electron configuration of F is (1s^2)(2s^2)(sp^5). In my book it says that there are two electrons in the ground state of Be in 1s and 2s orbital shells.

  86. science-chem question

    Hello I have another hybridization question. For example in BeF2 ... the electron configuration is 1s2, 2s2, 2p1. It gets hybridized to 1s2, 2s1, 2p2. I know that it will be a sp2 hybridization but I'm not exactly sure why. It's because the last p orbital

  87. Chemistry

    Which is not a ground state electron configuration? A. 1s2 B. 1s2 2p1 C. 1s2 2s2 D. 1s2 2s2 2p1

  88. electronic configuration

    how do you figure out electronic configuration of excited state? ex: identify atom & write ground state conig. 1s2 2s2 2p6 4s1 Isn't there eleven electrons here? Element number 11 is... 1s23s

  89. chem

    If you maximize the unshared electrons in the boron atom, the electron configuration is? i know the electron configuration at ground state is 1S2 2S2 2P1 but when it maximizes unshared electrons i don't understand how it affects the configuration

  90. chemistry electron config

    I need to know the predicted and actual electron configuration for Lanthanum I know for lets say Cr the predicted config is [Ar] 3d44s2 and the actual is [Ar]3d54s1 but lanthanum is different and i don't know how to do it. Any help? You can find the actual

  91. General chemistry ligand

    Hello. I have a question about ligands. How do you figure out how many ligands a central metal cation can have? For example, Cu^2+ and NH3. When they combine, it forms Cu(NH3)4^2+ Why does it form 4 ligands oppose to 6? A general rule, which isn't always

  92. Chemistry

    Identify the ions that correspond to the following electron configurations: (enter your answer with the symbol, numerical charge and sign with no spaces, for example O2-) doubly positive ion with the electron configuration {Xe}4f^14 5d^10 6s^2 = ? 4+ ion

  93. overview of teaching techniques

    which of the following statements about asking questions is true? (a)low level questions tend to promote academic achievement in students (b)most teachers in classrooms today ask kigh level questions (c)questions should be worded as clearly and simple as

  94. Chemistry

    What is the electron configuration of the element with 27 protons?

  95. Chemistry

    What element is represented by this electron ground state configuration 4d^10 4f^14 5s^2 5p^6 5d^10 5f^14 6s^2 6p6 6d^2 7s^2 How do I figure this out

  96. Chemistry (Check)

    Q: Name the group that has a general electron configuration of ns^2 and provide an example of an atom with this general configuration. A: Alkaline Earth Metals and Beryllium [He] 2s^2 Q: Name the group that has a general electron configuration of ns^2np^6

  97. Chem 1C

    What is the electron configuration of an isolated Fe atom (no ligands bound to it)? (Use notation like [Ne]3s^23p^6 for your answer) B. What is the electron configuration of an isolated Fe3+ cation? (Use notation like [Ne]3s^23p^6 for your answer)

  98. Chemistry

    I have drawn Lewis structures for hydrogen cyanide and cyanogen. I need to state the noble gas (for each element) whose electron configuration is attained in the Lewis structures. Can anyone help as I am quite confused! Many thanks Previous posts have

  99. overview of teaching techniques

    which of the following guidelines should be followed when giving directions to students? (a)dont allow students to choose the activity make all decisions yourself (b)require students to find their own background information and necessary materials (c)pemit

  100. Chemistry

    The element P (mass no.=39) and Q (mass no. =80) contain 20 and 45 neutrons respectively in their nucleus. Give their electron configuration separately

Pages

  1. 1
  2. 2
  3. 3
  4. 4
  5. 5
  6. 6
  7. 7
  8. 8
  9. 9
  10. 10
  11. 11
  12. 12
  13. 13
  14. 14
  15. 15
  16. 16
  17. 17
  18. 18
  19. 19
  20. 20