Question

1) Electronic configuration of an atom ‘X’ is (2,8,8,1). It combines with another atom Y

having electronic configuration (2,8,7): [3]

i) What type of bond will be formed between X and Y?

ii) Which atom is metal and which one is non-metal?

iii) Write the formula of the compound formed.​

Answer 1

Answer:

i) Ionic bond

ii) X is metal and Y non metal

iii) XY

Answer 2

(1)ionic bonding
(2) x- metal;y-non metal[ x has 1 valence electron which will be donated and y has 7 electrons so it has to accept electron from x]
(3) XY[ valency of x=1; valency of y=1; interchanging the valencies]
Extra information: the compound is potassium chloride (KCl)