Question

Why effective nuclear charge remains constant down the group?

Answer 1

mate it Ans down

Explanation:

In general, atomic radius decreases across a period and increases down a group. Across a period, effective nuclear charge increases as electron shielding remains constant. ... Down a group, the number of energy levels (n) increases, so there is a greater distance between the nucleus and the outermost orbital.

Answer 2

Answer:

Explanation:

Effective nuclear charge In general decreases down the group with some exceptions.

As we go down the group no. Of electrons in the inner shell keep on increasing, now the inner shell electron always repels the electron in the outter shell away from the nucleus and so as we go down the net charge faced by each valence shell electron after the battle between the repulsive and attractive forces,called “effective nuclear charge”, decreases as the number of electrons in inner orbits increase faster than the nuclear charge at centre which also results in increase in size down the group.

I hope it will be vale to you now, plz understand care fully that decrease in effective nuclear charge cause the size of atom to increase down the group and its not the other way around.