Question

4. An element X (At. No. 17) reacts with an element Y (At. No. 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) or metalloid(s).

c) What will be the nature of oxide formed by element Y? Identify the nature of
bonding in the compound formed.

d) Draw the electron dot structure of the divalent halide.

Answer 1

Answer:

A-since atomic number of x element is 17 it is a chlorine and y element is calcium

chlorine is placed in period 3 and group 17

calcium is placed in period 4 and group 2

B-chlorine is a non-metal whereas calcium is metal

C-calcium oxide.

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Answer 2

Answer:

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