Question

Name the elements and its valency having electronic configuration 2, 8, 3.

Answer 1

Atomic no is 13 so the element is:-
ALUMINIUM

WHICH HAS 3 VALENCY

Answer 2

Aluminium is an element with valency is 3 having the electronic configruration is 2, 8, 3.

Explanation:

• The given configuration is 2, 8, 3. The complete electronic configuration is $1s^2, 2s^2, 2p^6, 3s^2, 3p^1.$

• The element of this configuration is Aluminium which is a $3^r^d$ group element and the Valence of Aluminium is 3 because it has 3 electrons in its outer most shell.

• Aluminium is the first most abundant metal found on earth’s crust which is also lightweight than other metals in the earth.

• To obtain octet configuration, it loses those valence electrons.

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Atomic number of aluminium is 13 then what is its valency

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