Question

how does the tendency of element to change as we move from left to right.State reason​

Answer 1

Answer:

Hey mate here is your answer

Periodicity is the repetition of elements with similar properties when they are arranged according to their atomic no. in the periodic table.

all elements of the same group have the similar properties because because they have similar outer electronic configuration. for example, in group 17 ,halogens have the electronic configuration ns^2 np^7 .

as we move from left to right, size decreases, nuclear charge increases and hence the electrons feel more attracted towards the atom and hence the tendency to gain electrons increases. Halogens (group 17 elements) are the most electronegative with Fluorine being the highest.

4.5

Hope it helps you