Question

The electronic configuration of three elements is given below.
X-2,8,2
Y-2,8,6
Z-2,8,1
Which two elements will combine to form an ionic compound?
(A) X and Y
(B) Y and Z
(C) Xand Z
(D) Both (A) and (B)​

Answer 1

Answer:

x=magnesium

y=sulphur

z=sodium

Answer 2

(D) Both (A) and (B) will combine to form ionic compound.

• Ionic bond or electrovalent bond is formed by sharing of electrons. The atom with excess electrons loses its outermost electron to complete it's octet and atom with deficient electron gains electrons to complete it's outermost shell.
• Element X and element Z has extra electrons whole element Y lacks electrons.
• So, chemical formula for combination of X and Y is XY and chemical formula for compound Y and Z will be Z2Y.