Question

The first and most appropriate answer is brainliest.
Please, this is extremely urgent

Answer 1

Answer:

1) x =1s2 2s2 2p6 3s2

y= 1s2 2s2 2p6 3s2 3p5

period of x is 2 and y is 2

x is s block element

y is p block element

number of unpaired electron in y is 1

and x is zero

2) chemical properties of y is it most electronegative element

3) x is reducing as it belong to s block so it can donate it's electron

4)BeCl2 / XY2 is compound that can be formed

5) x has heigher atomic radius because as we move from left to right atomic size decrease and is chlorine