chemistry help-

posted by .

Which of the following has the lowest second ionization energy?

a. Ca b. Ne c. K d. Ar e. Na


Arrange the following set of ions in order of increasing atomic radii.

Ca2+, Cl-, K+, P3-, S2-



a. Ca2+ < K+ < P3- < S2- < Cl-
b. K+ < Cl- < Ca2+ < S2- < P3-
c. P3- < S2- < Cl- < K+ < Ca2+
d. Ca2+ < K+ < Cl- < S2- < P3-
e. Cl- < S2- < P3- < Ca2+ < K+

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. O.CHEM -> PLEASE CHECK!!

    Arrange the compounds in the order of increasing boiling point ***(LOWEST first): 1) H3C-O-CH3 2) H2O 3) CH3CH2OH 4) CH3CH2SH I think the order should be: #1, 4, 3, 2 Arrange the following in order of increasing rate of reactivity …
  2. chem help

    Arrange the following elements in order of increasing atomic radii. Sr, Rb, Sb, I, In
  3. CHEMISTRY

    Arrange the following ions in order of increasing size: Br- Ca2+ K+ Se2-
  4. CHEM

    Arrange the following in order of increasing atomic radii from smallest to largest. Mg Ra Sr Be Ca Ba
  5. CHEM HELP ANYONE ASAP

    Arrange the members of the following set of cations in order of increasing ionic radii: Sr2+ Ba2+ Rb+ K+ I understand that Sr2+ = 132 pm Ba2+ = 149 pm Rb+ = 166 pm K+ = 152 pm increasing ionic radii ....Sr2+ , Ba2+ , K+, Rb+ But the …
  6. quemistry

    arrange the following groups of elements in order of increasing ionization energy : a. Be,Mg,Sr. b. Bi,Cs,Ba. c. Na,A1,S
  7. Chemistry - check answers

    1) Which element has the largest first ionization energy?
  8. Chemistry

    1) How does the atomic radius change from left to right across a period in the periodic table?
  9. Chemistry

    1) How does the atomic radius change from left to right across a period in the periodic table?
  10. Chemistry

    Arrange the following ions in terms of increasing atomic radius (arrange the increasing from left [lowest] to right [largest]): P3-, Cl-, K+, S2-

More Similar Questions