Fill in the blanks:

(a) Atoms are …………… .

(b) An ion with positive charge is called …………… .

(c) An ion with negative charge is called …………… .

(d) 2H₂ means two …………… of hydrogen.

(e) …………… is a triatomic molecule.

(f) Metals have …………… valency.

(g) Chemical name of caustic soda is …………… .

(a) indivisible

(b) Cation

(c) Anion

(d) molecules

(e) Ozone

(f) electropositive

(g) Sodium hydroxide(NaOH)