chemistry

posted by .

how can you tell how many valence electrons family 3 (transition metals) have?
im confused about this.

  • chemistry -

    I am unsure how you are using family. Do you mean period 3 (period 3 elements are Na, Mg, Al, Si, P, S, Cl, and Ar. Group 3 (or Group III)(or group 13)consists of B, Al, Ga, In, and Tl.
    In the first case, the number of valence electrons consists of the outside electrons and in this case that is the group number; i.e., Na has 1 for it is in group IA, Mg has 2 for it is in group IIA, Al has 3 for it is in group IIIA, etc. If the latter case B, Al, Ga, In and Tl have 3 electrons in their outer shell(s) and they have a valence of 3. (Thalium also exhibits a +1 valence in some of its compounds). If you mean transition metals, they are neither period 3 nor group 3. The first transition series (the 3d series) is in period 4. This scenario can be confusing for the number of valence electrons for they vary. One way to make an educated guess is to look at the electron configuration. They are as follows:
    Scandium is [Ar] 3d1 4s2
    Titanium is [Ar] 3d2 4s2
    Vanadium is [Ar] 3d3 4s2
    Chromium is [Ar] 3d5 4s1
    etc.
    You could make a case for Sc as +3 and it is. The last three electrons are the outside ones.
    You could make a case for Ti being +2 or +4. Actually it has common valences of +3 and 4. For V, one could make the case for +2 and +5 whereas it is commonly 2,3,4, and 5. So the number of so-called valence electrons depends upon what anion it is combining with and how many of those d electrons are drawn away. Educated guesses help a little; memorizing does the rest. Experience doesn't hurt anything.

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. APChem

    "Part A: Most of the transition metals form brightly colored ionic substances. Which elements located in the first row transition metals cannot form ionic compounds?
  2. chemistry

    An atom has a valence shell configuration of ns2p5. To which group of elements in the periodic table does it belong?
  3. chemistry

    An atom has a valence shell configuration of ns2p5. To which group of elements in the periodic table does it belong?
  4. chemistry

    Hello, I have a question regarding the valence electrons of transition metals. I am aware of quantum numbers etc and how the s orbital gets filled before the d orbital but my question is that is if was asked to lets say group some …
  5. Science -CHECK MY WORK-

    a.) How can you describe the location of vanadium (V, atomic number 23) on the periodic table?
  6. Science

    The Periodic Table 1) What conclusions can be drawn about the relationship between the arrangement of elements on the periodic table and the patterns observed in their properties?
  7. Chemistry

    The homework question said "which 2nd row element has 6 valence electrons and a valence of 2?
  8. Science

    1. groups/ family of elements are ones which: A. Have the same number of electrons in the valence/ outer engery level B. Have exactly 8 electrons in the valence shell outer energy level C. Have the same number of protons in the nucleus …
  9. chemistry

    Which of the following statements about alkali metals is true?
  10. Chemistry

    I got this as a homework question. Identify Valence electrons and explain the difference in valence orbitals for main group and transition metals. I do not even understand how to begin to answer this. Please help thank you

More Similar Questions