Question

2
find out
Atomic number
Atomic mass
Valance electron
valency from the given atomic
structure
N
= 12​

Answer 1

Answer:

when n=12

electronic configuration is -2,8,2

valance electron -2

atomic number-12,mg

please mark as brainlist answer please

Answer 2

N atomic no = 7

atomic mass = 14.0067 amu

Valence electron : 3 or 5 .

valency  = 3

Explanation:

Nitrogen is found to have either 3 or 5 valence electrons and lies at the top of Group 15 on the periodic table.t can have either 3 or 5 valence electrons because it can bond in the outer 2p and 2s orbitals .

NITROGEN HAS 5 ELECTRONS. TWO ELECTRONS IN 1st SHELL AND 3 ELECTRONS IN OUTERMOST SHELL.SO TO GET CONFIGURATION IT HAS TO FORM TRIPLE BOND.SO IT NEEDS STILL 3 ELECTRONS TO GET STABLE. HENCE ITS VALENCY IS 3