Question

Q.3: Give two examples of each of the following
1) Elements with one electron in last orbit
ii) Elements with two electrons in last orbit
iii) Halogens
iv) Noble elements
v) Inert gases
vi) Metalloids​

Answer 1

Answer:

Edit

The noble gases (historically also the inert gases; sometimes referred to as aerogens[1]) make up a group of chemical elements with similar properties; under standard conditions, they are all odorless, colorless, monatomic gases with very low chemical reactivity. The six naturally occurring noble gases are helium (He), neon (Ne), argon (Ar), krypton (Kr), xenon (Xe), and the radioactive radon (Rn). Oganesson (Og) is variously predicted to be a noble gas as well or to break the trend due to relativistic effects; its chemistry has not yet been investigated.

Answer 2

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1 ) ..... LITHIUM , SODIUM

2 )...... BARIUM , CALCIUM

3 )..... CHLORINE , BROMINE

4 )..... HELIUM , ARGON

5 )....HELIUM , ARGON

{ INERT GASES AND NOBLE GASES ARE SAME }

6 )...SILICON BORON

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