Question

6. State three reasons for the following facts (i) Sulphur is a non-metal (ii) Magnesium is a metal One of the reason must be supported with a chemical equation.​

Answer 1

Sulphur (i) Poor conductor of heat and electricity

Magnese (i) Good conductor of heat and electricity

Sulpur(ii) Neither malleable nor ductile

Magnese (ii) Malleable nor ductile

Sulphur(iii) S + O2 →SO2 SO2 + H2O → H2SO3 (Sulphurous acid) Sulphur dioxide is acidic oxide.

Magnese(iii) 2Mg + O2 →2MgO2 MgO + H2O → Mg(OH)2 (Magnesium hydroxide) Magnesium oxide is basic in nature.

Mark me as brainlist

Answer 2

The three reasons why sulphur is a non-metal and magnesium is a metal are:

(i) Sulphur is a non-metal because of the following reasons:

• It is a poor conductor of heat and electricity.
• No free electrons are present in it to conduct electricity and tends to gain two electrons from other elements.
• We know that reacting a non-metal with acid gives no reaction. So,

$Sulphur + Acid$ → No Reaction

(ii) Magnesium is metal because of the following reasons:

• It is a good conductor of heat and electricity and tends to donate two electrons to other elements.
• Free electrons are present in it and is an electropositive element.
• A magnesium strip burns in the air to form magnesium oxide. So,

$2Mg+O_{2}$ → $2MgO$