Chemistry!! : Identify(give the symbol) and name the following elements or ions?

Question

Identify(give the symbol) and name the following elements or ions:

a) has 40 protons and 38 electrons

b)has the same number of electrons as xenon but has a charge of +2

c) has a mass number of 128, has 54 electrons and 76 neutrons

d) has 80 protons and 78 electrons

e) has the same number of electrons as krypton but has a charge of -2

f) has a mass number of 209, has 80 electrons and 126 neutrons

Answer 1

a) Zr2+

b) Ba2+

c) Te2-

d)Hg2+

e) Se2-

f) Bi3+

Answer 2

you should use the periodic table