Question

Answer in one sentence :
1. Write the name and symbol of the most electronegative atom.-
2. Name the family of nonmetals having valency one.
3.Name the nonmetals in the third period.
4. Write the name and symbol of the noble gas with the smallest atomic radius.​

Answer 1

Explanation:

1)flourine(F)

2) halogens

3)Phosphorous,sulphur,argon,chlorine

4)Helium

Answer 2

Answer:

1. Fluorine (F) is the first element in the Halogen group (group 17) in the periodic tabale.
2. Group 17 also known as halogen group.
3. Argon is a non metal in third period.
4. The examples of noble gases are- Helium, Neon, Argon, Krypton, Xenon and Radon. And, the noble gas with the smallest atomic radius, is Helium. Its symbol is He.

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