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Resonance

Element 'x' w...

Question

Element 'x' which is solid and having high melting point, form a Chloride $^{'} x C l_{3}^{'}$ . This element 'x' would be in which group of Periodic table -

A

Na

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B

Mg

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C

Al

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D

Si

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Solution

The correct option is D Al
Element aluminium has atomic number 13. Electronic configuration is 2, 8, 3
$V a l e n c y = 3$
$2 A l + 3 C l_{2} \to 2 A l C l_{3}$

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