Question

Atomic size: The term atomic size refers to the radius of an atom. The

atomic size may be visualized as the distance between the center of

nucleus and the outermost shell of an isolated atom. The atomic radius of

hydrogen atom is 37 pm.

Variation of atomic radius with atomic number across the second period is given below

(i.)Which of the following correctly represented the increasing order of atomic

size :-

(a) F, N, Be, Li

(b)Be, B, N, O

(c)Li, Be, O, F

(d)B, C, N, F

(ii.) 1 pm is :-

(a) 10−10 m

(b) 10−12 m

(c) 10−15 m

(d) 10−9 m

(iii) Atomic radius of H and Li are:

(a) 150 pm and 150 pm

(b) 100 pm and 150 pm

(c) 37 pm and 150 pm

(d) 150 pm and 37 pm

(iv.) Across the second period when atomic number increases atomic size

(a) increases

(b) remains same

(c increases then decreases

(d) decreases​

Answer 1

Answer:

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Explanation:

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