Chemical bonding

The property which is characteristic of an electrovalent compound is that

• It is easily vaporized

• It has a high melting point

• It is a weak electrolyte

• It often exist as a liquid

When a metal atom becomes an ion:

• It loses electrons and is oxidized

• It gains electrons and is reduced

• It gains electrons and is oxidized

• It loses electrons and is reduced

The type of covalent bond present in a nitrogen molecule is a

• Double bond

• Triple bond

• Single bond

• Dative bond

The number of covalent, coordinate bond and lone pair in hydronium ion is:

• 2,2,1

• 1,1,1

• 0,2,1

• 2,1,1

Among the following the one which is composed, of all the three kinds of bond (ionic, covalent and coordinate bond) is:

• Sodium chloride

• Ammonia

• Carbon tetrachloride

• Ammonium chloride

Which of the following is a common characteristic of a covalent compound?

• High melting point

• Consists of molecules

• Always soluble in water

• Conducts electricity in molten state

Atoms like oxygen and chlorine ________ the electrons to form stable molecules such as O2 and Cl2

• Donates

• Accepts

• Shares

• Exchanges

What elements generally make an ionic bond?

• metal and non metal

• metal and metal

• non metal and non metal

Why do bonds form?

• To fill the valence shell of electrons for the elements involved

• to release energy stored in the bonds

• because whenever you mix two chemicals, there will be a reaction

• because of attraction

The number of _____ is most important in determining how an atoms will bond.

• Neutrons

• Protons

• Valence electrons

• Electrons in the innermost shells