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

Tendency to gain electrons increases from L → R in the period because the atomic size goes on decreasing and nuclear charge increases, which can attract the nearby electron.