SSC MTS EXAM

SSC

CHEMISTRY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Compared to ionic compounds, ____ generally have lower melting points and boiling points
A
elemental
B
bonded
C
double-bonded
D
covalent
Explanation: 

Detailed explanation-1: -The molecules of covalent compounds are held by weak intramolecular forces. Thus, a very small amount of energy is required to break the bonds between two or more molecules. That is why they have low melting and boiling points.

Detailed explanation-2: -Ionic compounds have high melting and boiling points while covalent compounds have low melting and boiling points.

Detailed explanation-3: -Being held by a strong electrostatic force of attraction between ions, ionic compounds have high melting and boiling points.

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