Which of the following elements is a brittle solid and poor conductor of heat and electricity?...

Which of the following elements is a brittle solid and poor conductor of heat and electricity?

A. Na

B.Mn

C. S

D.Pt

Solutions

Expert Solution

To conduct electricity and heat, the element must provide free electrons or should have loosely bounded electron.

a) Sodium is a good conductor of electricity at all states because its molecular structure consists of a lattice of positive ions encompassed by a sea of delocalized electrons, which can carry a charge and are mobile; hence, electric charges can flow through sodium easily via the electrons..

b) Manganese is a very hard, brittle, gray-white transition metal having free electrons in the outer orbital. Hence this will conduct electricity and heat.

c) Sulfur belongs to p block element and this has no free electrons that can move around and carry charge from place to place. Hence sulfur will be a bad conductor of heat and electicity

d) Platinum is an element with high electrical conductivity due to the availability of free electrons in the orbital

Hence the answer is Sulfur which is the brittle solid and poor conductor of heat and electricity

PLEASE LET ME KNOW IF THE ANSWER IS SATISFACTORY

queen_honey_blossom answered 5 months ago

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