CHEMISTRY · Single correct · A Level · Chemistry · Periodicity and periodic trends · Periodicity and periodic trends
Problem
Which of the following statements are true?
I Group 1 elements tend to form ions with a +1 charge.
II Group 7 elements tend to form ions with a –1 charge.
III d-block elements can form more than one ion.
(1) I and II only
(2) I and III only
(3) II and III only
(4) I, II and III