Question

Write out the complete electron configuration for the element P, atomic number 15 and explain how you would place the last few electrons in orbitals. What rule would apply?

Answer 1

Can u explain it to me please

Answer 2

1s2 2s2 2p6 3s2 3p3 - the s orbitals have max occupancy of 2 electrons and the p have 6 the last 3p orbital contains 3 electrons in phosphorus atom

Answer 3

Phosphurus is in Group 5 of Periodic Tables and has 5 electrons in its outermost shell. 2 are in 3s orbital so there are 3 left to go into the 3p orbital

Answer 4

2,8,5

Answer 5

this enables the configuration to have the complete number of electrons required.
the max no. of electrons in the first shell is 2
and the second is 8
for the third shell the max is 18 but since the valence for atoms with less electrons ranges from +1 to -3

http://en.wikipedia.org/wiki/Valence_(chemistry)
hope it helps :D

Answer 6

Thanks @ramal @cwrw238