Chemistry, asked by krishchaits201p48mcx, 1 year ago

The atomic radii of three elements A, B and C of a periodic table are 186 pm, 104 pm and 143
pm respectively. Giving a reason, arrange these elements in the increasing order of atomic
number in the period.

Answers

Answered by Nikhilgarg
41
Ans-Order of radii is B<C<A.

since atomic size decreases along a period,as the atomic number(nuclear charge) increases thus,the element with smaller radii,has the highest atomic number.
Hence,B has the highest atomic number followed by C and A

i.e. A<C<B

Answered by dramkrishna76
12

let,

A=186 pm

B=104 pm

C=143 pm

the atomic size decreases along a period, as the atomic number [nuclear charge} increases. THUS, the element with smaller radii has the highest atomic number.

hence, B<C<A

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