Question

How will the tendency to gain electrons change as we go from left to right across a period ? Why
?
OR
Out of the three elements P, Q and R having atomic numbers 11, 17 and 19 respectively, which two
elements will show similar properties and why?​

Answer 1

Explanation:

The tendency to gain electrons increases as we go from left to right across a period because the atomic number increases as we go left to right in a period

Answer 2

Explanation:

As we move from left to right across a period in the periodic table, the tendency to gain electron increases. ... As a result, the effective nuclear charge acting on the valence electrons increases. Hence, the tendency to gain electrons increases.

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