Question

Write the electronic configuration of element X ( Atomic number 11) and element Y ( Atomic number 8). State the formula of the compound formed when element X combines with element Y. Draw the electron dot structure of the compound and state the nature of the bond formed

Answer 1

Electronic Configuration of X = 2,8,1 (Sodium)

Electronic Configuration of Y= 2,6 (Oxygen)

Valency of X = +1

Valency of Y = -2

So , by cross valency method the formula of the compound is X2Y.

The compound has ionic bonds because as X is electropositive and Y is electronegative, there will be transfer of electrons.