The electronic configurations of four particles A, B, C and D are given below:
A2,8,8B2,8,2C2,6D2,8
(i) magniesium atom? (i) oxygen atom?
(iii) sodium ion? (iv) chloride ion?
A - chloride ion - 18 electrons
B - magnesium atom - 12 electrons
C - oxygen atom - 8 electrons
D - sodium ion - 10 electrons