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Valency

Tha valency o...

Question

Tha valency of sodium is ______

A

1

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B

4

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C

3

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D

2

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Solution

The correct option is A 1
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Similar questions

Q. In which group do all the elements have a valency of one?
(a) hydrogen, oxygen, chlorine
(b) potassium, hydrogen, sulphur
(c) sodium, chlorine, hydrogen
(d) sodium, hydrogen, sulphur

What is the number of valence electrons in :

(a) sodium ion, Na⁺

(b) oxide ion, O^2–

Q. (a) What is the difference between a cation and an anion ? Explain with examples.
(b) The valencies (or charges) of some of the ions are given below :

Ion	Valency (Charge)	Ion	Valency (Charge)
Sodium ion	1+	Nitrate ion	1–
Copper ion	2+	Sulphide ion	2–

Using this information, write down the formulae of :
(i) Sodium sulphide
(ii) Copper nitrate

Match the atomic number 4, 8, 14, 15 and 19 with each of the following:

(a) A solid non-metal of valency 3.

(b) A gas of valency 2.

(c) A metal of valency 1.

(d) A non-metal of valency 4.

Q. Which of the following elements does not show variable valency a)sodium b)gold c)iron

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