[طالب جامعي مكسور الخاطر]

معليش داري اني ازعجتكم بس فيه اسئلة في باب ( الجدول الدوري والروابط )

1. an atom of which element below has the most unpaired electrons.

a)Ba b)Al c)P d)O e)F

2. hoe many shared pairs of electrons are in the outer shll of the central nitrogen atom of NH3

a)4 b(3 c)2 d(1 e)0


3. how many resonance structurres do
the nitrate ion ,NO-3, have

a.1 b.2 c.3 d.4 e.0

4. how many lone pairs of electrons are there on Xe atom
in the XeF4

a. 1 b.2 c.3 d.4 e.0