Question

Name the following :- (3)

1. Write the name and symbol of the elements from the description.

i) The most electronegative atom.

ii) The noble gas with the smallest atomic radius.

2. Write the names from the description.

i) The group with valency zero.

ii) The family of non-metals having valency one.

3. i) Gaseous oxidising agent.

ii) Chemical which increases speed of reaction.​

Answer 1

Answer:

Explanation:

1. 1i = The most electronegative atom is fluorine. 1ii = The noble gas with the smallest atomic radius is helium.                                                                            2i = The group with valency zero is the noble group. 2ii = The family of non metals having valency one is the halogens family.                                                         3i = An example is hydrogen gas. 3ii = Chemical which increases speed of reaction is probably catalyst A.