a). It has a similar structure to diamond. b). It has same valency as Lithium.

Question

Choose an element from period 3 of modern periodic table that matches the description given below in each instance. Give reason for your choice.

a. It has a similar structure to diamond.

b. It has same valency as Lithium.

c. It has variable valency and is a member of the Oxygen family

Monjur Alahi

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2025-01-04 04:42

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Group — Valency I group — i) +2 ,II group — ii) -1

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Salim Ahmed Kawsar · Accepted Answer · 2023-02-05T15:29:48+06:00

Salim Ahmed Kawsar

a. Silicon

Reason:

Tetrahedral structure

OR

Tetravalency or Four valeny and catenation

OR

Covalent bonding like carbon

b. Sodium

Reason:

It has 1 valence electron like Lithium

c. Sulphur Reason: it forms oxides SO₂ and SO₃

5 views Answered 2023-02-05 15:29