Question

As the elements of Group 17 are considered
in order of increasing atomic number, there
is an increase in?​

Answer 1

Answer:

Explanation:

(1) Atomic radius, as atomic number of atom increases down the group

(2) Electronegativity, as the tendency of an atom to attract a bonding pair of electrons decreases from fluorine to astatine in group 17 because the number of electron shells present increases down the group, which screens the nuclear charge of the element more effectively and reduces electronegativity.

(3) First ionization energy, energy required to remove an electron from a gaseous atom or ion which decreases down group 17 from top to bottom also due to screening effect