Question

Give the Symbol of the element with the lowest atomic number that:

a) Has a complete 3s sublevel

b) has 16 electrons in the fourth level

c) has three filled 3d orbitals

d) has at least one p electron and is paramagentic

e) has three 4p electrons

f) is a nonmetal in period 6

g) has two unpaired electrons

h) has a half-filled 2p sublevel

i) is in group VA with more than two p electrons

2) Write orbital configurations for F, Na+1

Answer 1

a) Has a complete 3s sublevel   Magnesium (Mg)

b) has 16 electrons in the fourth level : Rhodium ( Rh)

c) has three filled 3d orbitals Vanadium(V)

d) has at least one p electron and is paramagentic

e) has three 4p electrons As

f) is a nonmetal in period 6 O

g) has two unpaired electrons

h) has a half-filled 2p sublevel N

i) is in group VA with more than two p electrons. P

2) Write orbital configurations for F, Na+1

F : F (1s²2s²2p⁵)

Na+ : Na (1s²2s²2p⁶ )