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QUESTION
Which of the following pair of elements could possibly be in the same group? X has a 1+ ion; Y has a 1- ion. X has an atomic number 15; Y forms a 3- ion. X tends to form a 2+ ion; Y tends to gain two
Which of the following pair of elements could possibly be in the same group?
X has a 1+ ion; Y has a 1- ion.
X has an atomic number 15; Y forms a 3- ion.
X tends to form a 2+ ion; Y tends to gain two electrons.
X will tend to gain one electron; Y has eight electrons in the outer orbit.
