Question

Example 2. An element X (atomic number = 17) reacts
with an element Y (atomic number = 20) to form a
divalent halide.
(i) Where in the periodic table are elements X and Y placed?
(ii) Classify X and Yas metal (s), non-metal (s) or
metalloid (s).
(iii) What will be the nature of oxide of element Y? Identify
the nature of bonding in the compound formed.
(iv) Draw the electron dot structure of the divalent halide.​

Answer 1

Explanation:

1. x is placed in group number 17.Y is placed in group no 2.
2. x is non metal while Y is a metal .
3. CaO