Question

Which of the following gives the correct increasing order of the atomic radii of chlorine (CI),
phosphorous (P) and sulphur (S)?
(a) CI, S, P
(b) P, S, CI
(C) S, P, CI
(d) P, CI, S​

Answer 1

Atomic radius of the following atom in correct increasing order of atomic radius are,

CI, S, P

Option (a)

Explanation:

• atomic radius depends on two factors.
• The first factor is the number of orbits present in the atom. Since all the three elements which are given in the option have the same number of orbits in the second factor becomes more important for determining the atomic radius.
• If the atom have same number of orbit then the the atom which have higher number of electron is smaller.
• As a result chlorine is smaller than Sulphur and sulphur is smaller than phosphorus

To know more about atomic radius,

Atomic size goes on increasing down a group. Explain

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