Question

I JUST NEED HELP!!!!

Which group or groups of atoms are the only atoms with f orbitals?
Question 10 options:

A)

All noble gases

B)

All atoms heavier than barium (Ba)


C)

All atoms heavier than krypton (Kr)

D)

Lanthanides and actinides

Answer 1

D ( I am probably wrong)

Step-by-step explanation:

Answer 2

All atoms heavier than barium (Ba)

arium has completely filled 5d orbitals and 6s orbitals. After barium, the lanthanide elements occur, in which inner shell 4f-orbitals are filled. So all atoms heavier than Ba possess f-orbitals.

Step-by-step explanation: