Question

Can someone please help?!
Which of the following elements has the smallest ionization energy?
a) phosphorus
b) arsenic
c) nitrogen
d) bismuth
An electron in the outermost shell that determines the atom’s chemical properties is a(n)
a) Valance electron
b) Paired electron
c) Noble electron
d) Core electron

Which element is synthetic?
a) I
b) Ce
c) He
d) No

Which family becomes become stable by losing two electrons

Which family varies in the number of electrons in the valence shell