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Variable Valency Representing

The valency o...

Question

The valency of a phosphate ion is :

A

- 1

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B

- 2

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C

+ 3

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D

- 3

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Solution

The correct option is D $- 3$

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Similar questions

Q. (a) What is an ion ? How is an ion formed ? Explain with the help of two examples of different ions.
(b) The valencies (or charges) of some of the ions are given below :

Ion	Valency (Charge)	Ion	Valency (Charge)
Sodium ion	1+	Bromide ion	1–
Ammonium ion	1+	Hydroxide ion	1–
Calcium ion	2+	Sulphate ion	2–
Lead ion	2+	Phosphate ion	3–

Using this information, write down the formulae of the following compounds :
(i) Sodium phosphate
(ii) Ammonium sulphate
(iii) Calcium hydroxide
(iv) Lead bromide

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Q. (i) Name three elements each whose ions have valency +1,+2 and +3 respectively.
(ii) Name three non-metals/radicals which have valency -1,-2 and -3.

Q. Valency of carbon in

{C O}_{3}^{2 -}

Q. What is the valency of carbonate ion (

{CO}_{3}^{2 -}

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Variable Valency Representing

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