Question

Predict the formula of the stable binary compounds that would be formed by the following pair of elements. (i)Silicon and oxygen. (ii)Gallium and chlorine. (iii)Barium and bromine.

Answer 1

Answer:

Hólã,

Explanation:

CHEMICAL FORMULA- a brief representation of the molecule of a substance (element or compound) in terms of the symbols of the various elements present in it is called its chemical formula.

(a) LiO2 (Lithium dioxide)

(b) Mg3N2 (Magnesium nitrite)

(c) AlI3 (Aluminium triiodide)

(d) SiO2 (Silicon dioxide)

(e) PF3 or PF5 (Phosphorous trifluoride or pentafluoride)

(f) The element with the atomic number 71 is Lutetium (Lu). It has valency 3. Hence, the formula of the compound is LuF3.(Lutetium trifluoride)

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