Question

An element X (atomic number 17) reacts with an element Y (atomic number 20) to form a divalent halide.
(a) Where in the periodic table are elements X and Y placed?
(b) Classify X and Y as metal(s), non-metal(s) of metalloid(s).
(c) What will be the nature of oxide of element Y? Identify the nature of bonding in the compound formed.
(d) Draw the electron dot structure of the divalent halide,

Answer 1

(a) X belong to Group 17 and Period 3, while Y belongs to Group 2 and Period 4.

(b) X is non-metal, while Y is metal

(c) As Y is a metal, so it makes basic oxide. The halide compound has ionic bond.

(d)