Question

Which of the following pairs of elements could possibly be in the same group? (2 points)
Select one:
a. X has a 1+ ion; Y has a 1- ion.
b. X tends to form a 2+ ion; Y tends to gain two electrons.
c. X will tend to gain one electron; Y has eight valence electrons.
d. X has an atomic number 15; Y forms a 3- ion.

Answer 1

@Nurali

Answer 2

i think X has an atomic number 15; Y forms a 3- ion.

Answer 3

thnx