a
(b)
Ammonium Chloride
Potassium Sulphate
Aluminium Nitride
Cupric Oxide
Zinc Hydroxide
(d)
e
Question 14
12+3+1+4
(a)
(b)
(c)
(d)
What are noble gases?
Give the name and symbol of three noble gases.
Name the particle which revolves around the nucleus of an atom.
Write the number of atom of each element in the molecules of the following compounds-
(1) K2CO3
FeSO4
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Answer:
The elements are helium (He), neon (Ne), argon (Ar), krypton (Kr), xenon (Xe), radon (Rn), and oganesson (Og).(noble gases)
noble gases have an octet condition(8 electrons in outermost shell so they are chemically nonreactive)
electrons revolve round the nucleus
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Explanation:
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