Question

I will add u to brain list plzzz answer define it fast urgent
4

Answer 1

1) Electropositivity :-

In period - Electropositivity decreases because there is addition of a new elctron after each group which decrease the tendency to lose electrons easily because whenever a new electon is added the electrostatic force increases and it becomes difficult to lose electrons.

In group - Down the group electropositivity increases because the no. of valence electrons stay same but a new shell is added and it becomes easy to lose electrons.

2) Atomic radius :-

In period - Atomic radius decreases as we move left to right in a period because a new electron is added and the force becomes strong hence resulting a shrinkage in the atoms of element.

In group - When we move down in a group the atomic radius increases because of the addition of a new shell or orbit.

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