Question

How would the tendency to again electrons change as you go from left to right in the periodic table

Answer 1

Bcz when we goes left to right in periodic table then atomic no. Is increases but the size of atom decreases.here concept of effective nuclear charge applies. According to this concept when the no. Of electrons increases then attraction of nucleous on the outer shell electron increases and due to this effect radius of atom decreases.
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Answer 2

The tendency to gain electrons increases and we go from left to right in a period because the effective nuclear charge increases and the atomic radius decreases. So the protons hold the electrons more tightly thus the losing of electrons becomes difficult. 

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