An atom it ground state contains 18 electrons. How many of these electrons are in orbitals with l=0? a.4 b.2 c.8 d.6

Answer 1

Make a table.
N.......1|..2.....|...3...........|
l.......0|..0..1..|...0....1.....2|
elec,,,,:|,,:|:::|,,,,:,,,:::,,,,,|
Count the electrons (: = 2 electrons) in l = 0. I count 16 total electrons of which there are 6 with l = 0