Question

1. Which of the following species can exist independently?
(a) H
(b) CL
(c) O
(d) NE
2. Which of the following species cannot exist independently?
(a) H2O
(b) CO2
(c) N
(d) HCL
3. Which of the following has an atomicity of 3?
(a) Nitrogen
(b) Chlorine
(c) Bromine
(d) Ozone
4. If the valency of oxygen is 2, what is the valency of copper in CuO?
(a) 1
(b) 2
(c) 3
(d) 4

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Answer 1

Answer:

3. ozone

Explanation:

.............

Answer 2

Answer:

1. Ne

2. N

3. Ozone

4. 1

Explanation:

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