Question

F, CL, Br, I arrange these elements in increasing order of their atomic radii

Answer 1

F, cl,Br,I is the the increasing order

Answer 2

Answer:

The increasing order of atomic radii is F < Cl < Br < I .

Explanation:

• The elements, F, Cl, Br, I are all halogens and belong to group VII A of the modern periodic table. Together they are called halogens.

• The atomic radii is the distance from the centre of the nucleus to the outermost shell of the atom. The atomic radii increases as we go down a group so, The increasing order of atomic radii is F < Cl < Br < I .

• The reasons are as follows: -

          1. Atomic number and number of shell increases down a group.

          2. Effective nuclear charge decreases. ( effective nuclear charge refers to the charge that outermost electrons have)

          3. Increase in the screening effect. down the group.( The shielding effect, also known as the screening effect, can be defined more simply as the loss of attraction between higher valence electrons and the nucleus as a result of the shielding produced by lower valence electrons.)