Question

an element E has valence 3.write the formula for its bromide, oxide, carbonate, nitrate​

Answer 1

Explanation:

An element e has a valency 3 . Write the formula for its bromide oxide carbonate nitrite

Answer 2

Answer:

Explanation:

The formula of compound is determined by criss-cross method. By cross multiplying the valency of the constituting elements.

(i) bromide

Valency of bromine is 1.

E      Br

3       1

Resultant formula is EBr3.

Similarly, you can find the chemical formula of other compounds.

(ii) Oxides

E      O

3      2

Resultant formula is E2O3

​(iii) Carbonate

E      CO3

​

3       2

Resultant formula is E2(CO3)3

(iv) Nitrate

E     NO3

3        1

Resultant formula is E(NO3)3