Question

Science
Class :X
Solve the given questions:
Chemistry:
Q1. The elements of the second period of the Periodic Table are given below
Li Be B C N 0F
(a) Give reason to explain why atomic radii decrease from Li to F
(b) Identify the most
(i) metallic and
(ii)non-metallic element.
02. The necition of three elements A, B and C in the Periodic Table is shown​

Answer 1

Answer:a) due to effective nuclear charge

b)i)Li ii)F

Explanation:

Answer 2

Answer:

I'm also in X std.

I can explain u.

1) Atomic no. goes on increasing from left to right within the period.

The small atomic radius has less attractive force between nucleus and outermost shells. Whereas The highest atomic no. has high attractive force of attraction between nucleus and outermost shells. They appear to be small due to high attractive force.

2) I think F is metallic and O is nonmetallic.