Question

An element X from group 2 of the Periodic Table reacts with Y from group 17 to form a compound. Give the formula of the compound. *

(a) XY₂

(b) XY

(c) X₂Y

(d) (XY)₂

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Answer 1

Answer:

x 2 , y 17

Explanation:

a xy ² is that answer

Answer 2

Explanation:

ANSWER

(a) The nature of the compound formed is ionic since X is metal and Y is non-metal.

(b) Yes because the compound form is an ionic compound.

(c) The formula of the compound formed is XY

2

since the electrovalency of X is 2 and Y is 1.

(d) The valency of element X is 2.

(e) 7 electrons since it belongs to group 17.