Question

An element M has valency 2. Write the formula of its i) Oxide ii) Hydroxide

iii) Sulphide iv) Chloride v) Nitrate vi) Phosphate

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Answer 1

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Answer 2

Answer:

(ii) OH − is hydroxide ion. By balancing charge, formula of metal hydroxide ion is M(OH) 2.

(iv) Chloride has Cl − ion. Hence, metal chloride is MCl 2 .

(v) NO 3−is nitrate ion. By charge balance, metal nitrate is M(NO 3 ) 2 .

(vi) (PO 4 ) 3− is phosphate ion. By charge balance, metal phosphate is M 3 (PO 4 ) 2.