What is the formal charge of phosphorus in the proper Lewis structure of phosphate ion?
Which of the following is the correct Lewis structure for CS 2?
Consider the following ionic substances and arrange them in order of decreasing lattice energy.
MgCl2 CaCl 2 MgF 2
Consider the following orderings.
I. Al < Si < P
II. Be< Mg< Ca
III. I<Br< CI
IV. Na+< Mg2+< Al3+
Which of the above gives a correct trend for increasing ionization energy for loss of one electron from the indicated atom or ion?
A. II, IV
B. I, III
C. III, IV
D. I, III, IV
E. none of these are correct
Which ion below has the greatest radius?