Question

Write the chemical formulae of the following:
(a) Magnesium chloride
(b) Calcium oxide
(c) Copper nitrate
(d) Aluminium chloride
(e) Calcium carbonate.​

Answer 1

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(a) Magnesium chloride

Symbol —> Mg Cl

Change —> +2 -1

Formula —> MgCl2

(b) Calcium oxide

Symbol —> Ca O

Charge —> +2 -2

Formula —> CaO

(c) Copper nitrate

Symbol —> Cu NO

Change +2 -1

Formula -4 CU(N03)2

(d) Aluminium chloride

Symbol —> Al Cl

Change —> +3 -1

Formula —> AlCl3

(d) Calcium carbonate

Symbol —> Ca CO3

Change —> +2 -2

Formula —> CaC03

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Answer 2

Answer:

MgCl2,CaO,Cu(NO3)2,(AlCl3),CaCO3....

.......I think...