PERIODIC TABLE QUIZ XI Part II

20.The total number of electrons in the d orbitals of 80Hg is ….
a.2
b.10
c.20
d.30
e.54
21.Which of the following electron configurations is correct for cobalt, (atomic number 27)?
a.[Ar]5s24d7
b.[Kr]4s24d9
c.[Ar]4s23d7
d.[Kr]4s23d7
e.[Ar]4s24d9
22.Which of the following electron configurations is correct for ruthenium, (atomic number 44)?
a.[Kr]3d104s24p8
b.[Kr]4d65s1
c.[Kr]4d75s2
d.[Kr]4d75s1
e.[Ar]3d103f14
23.Which of the following electron configurations is correct for selenium, (atomic number 34)?
a.[Kr]4s23d104p4
b.[Ar]4s23d104p4
c.[Ar]3s23d103p4
d.[Kr]4s24d103p4
e.[Kr]4s24d104p4
24.Which of the following electron configurations is correct for zirconium, (atomic number 40)?
a.[Ar]3d24s2
b.[Kr]4d25s2
c.[Ar]3d103f2
d.[Kr]4d45s2
e.[Kr]4d25s1
25.Which of the following electron configurations is correct for phosphorus (atomic number 16)?
a.1s22s22p63p23p1
b.1s22s22p63s13p3
c.1s22s22p63s33p1
d.1s22s22p63s23p3
e.1s22s22p63s23p5
26.Which of the following electron configurations is correct for molybdenum, (atomic number 42)?
a.[Kr]4d55s1
b.[Ar]4d55s1
c.[Ar]3d144s24p8
d.[Kr]4d45s2
e.[Ar]3d144s24p64d6
27.Which of the following electron configurations is correct for silver, (atomic number 47)?
a.[Kr]4d105s1
b.[Ar]3d103f14
c.[Kr]4d95s2
d.[Ar]3d104s1
e.[Ar]3d144s24p64d6
28.Which of the following electron configurations is correct for copper, (atomic number 29)?
a.[Ar]3d104s1
b.[Kr]3d104s1
c.[Ar]3d94s2
d.[Ar]3d103f14
e.[Kr]3d94s1