Chemical Combination

The bond in sodium chloride molecule is ............ bond

• single covalent

• double covalent

• triple covalent

• ionic

The covalent bond usually arises between ................... elements.

• two metallic

• two nonmetallic

• metallic and nonmetallic

• metallic and noble

All of the following are examples of single covalent bonds, except ..............

• HCl

All of the following are covalent molecules, except ..................

• MgO

• HCl

Magnesium oxide is an ionic compound.

• True

• False

Ionic bond arises between two nonmetals.

• True

• False

In a covalent bond, the two nonmetal atoms do not lose or gain electrons.

• True

• False

In an ionic bond, the metal atom gives electron to the nonmetal atom.

• True

• False

Choose the odd word out.

• Nitrogen molecule

• Table salt molecule

• Hydrogen molecule

• Oxygen molecule

Choose the odd symbol out.