Question

at least search it in Google and send me...xD

I am lazy enough to search d answers....​

Answer 1

Answer:

4.For all elements in period 2, as the atomic number increases, the atomic radius of the elements decreases, the electronegativity increases, and the ionization energy increases. Period 2 only has two metals (lithium and beryllium) of eight elements, less than for any subsequent period both by number and by proportion.

5.Be 1s22s2 has a filled valence shell, so it does not have the tendency to gain electrons. Thus its electron affinity is almost zero.

$<marquee bgcolor = "white" behaviour-move><font color ="pink"><h1>hope ♡♡♡♡♡</ht></marquee>$

$<marquee bgcolor = "white" behaviour-move><font color ="yellow"><h1>it ♡♡♡♡♡</ht></marquee>$

$<marquee bgcolor = "white" behaviour-move><font color ="cyan"><h1>helps ♡♡♡♡♡</ht></marquee>$