Pauml5anellarm0ami Pauml5anellarm0ami

29-12-2015
Chemistry

Answered

At STP, an element that is a brittle solid and a poor conductor of heat and electricity could have an atomic number of

(1) 12 (3) 16

(2) 13 (4) 17

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InformationHighway InformationHighway

29-12-2015

(3) 16, which is Sulfer.

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itemderby itemderby

07-01-2019

Answer: Option (2) is the correct answer.

Explanation:

It is known that non-metals do not conduct electricity.

Carbon has atomic number 12, sulfur has atomic number 16, and chlorine has an atomic number 17. All these elements are non-metals.

Whereas aluminium has atomic number 13 and it is a poor metal.

So, aluminium being a poor metal is a brittle solid and a poor conductor of heat and electricity.

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