Review Questions

1 . The Mg2+    ion has how many    electrons?

(A) 12

(B) 10

(C) 14

(D) 24

2 . It  can be  shown   using   mass    spectrometry    that    the ratio   of  naturally   occurring   chlorine-35

to  its isotope chlorine-37 is  3:1.    Assuming    that    no  other   isotopes    existed,    what    would   be

the atomic  weight  of  chlorine?

    g/mol

3 . The maximum number  of  electrons   in  a   shell   with    the principal   quantum number  equal   to

4   is

(A) 2

(B) 10

(C) 16

(D) 32

4 . If  the principal   quantum number  of  a   shell   is  equal   to  2,  what    types   of  orbitals    will    be

present?