Question

Q1. Fill in the blanks.
a) Atomicity is the number of atoms present in one molecule of an element.
b) Atoms of different ________________ form the molecule of a __________________.
c) The chemical name of KOH is _________________________. Q2. Choose the correct option.
a) Discovery of neutron is done by:
(i) James Chadwick (ii) Goldstein (iii) Rutherford b) A radical with one atom of nitrogen and four atoms of hydrogen is: (i) Ammonia (ii) Ammonium (iii) Nitrite c) The molecule of this element is composed of only one atom: (i) Chlorine (ii) Calcium (iii) Sulphur d) Number of protons in an atom of Chlorine is 17, neutrons is 18 and electrons is:
(i) 18 (ii) 17 (iii) 16
Q3. State the atomicity of the following:
a) Ozone _________
b) Nitrogen _________
c) Magnesium _________
d) Phosphorus _________
e) Radon _________

Answer 1

Answer:

Here is your Answer

Explanation:

1 . b) Atoms of different Elements the molecule if a Compound.

c) Potassium hydroxide

2. James Chadwick

Ammonia

Chlorine

17

3. Ozone 3

Nitrogen 2

Magnesium 1

Phosphorus 4

Radon 86

.

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