A metal X have 2 valence electrons and a metal Y have 6 valence electrons. a. State the type of bond formed between them. b. Write the formula of the compound formed between X and Y.
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Answer:
If A metal X has 2 valence electrons and a metal Y has 6 valence electrons, then,
(A) The bond formed between them is ionic.
(B) The formula of the compound is XY
Explanation:
Metal X has 2 electrons in the valence shell, Thus X prefers donating these 2 electrons than accepting 6 more electrons to attain stability. So metal X forms X²⁺ ions.
Since metal Y has 6 valence electrons, it accepts 2 more electrons to complete octet in the outermost shell. So metal Y forms Y²⁻ ions.
A
Two electrons are transferred from X to Y. Hence the bond formed is an ionic bond.
B
An equal number of electrons has to be gained or lost.
then,
2 × X = (8-6) × Y
X/Y = 2/2 = 1
the compound is XY.
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