Which statement best describes the overall periodic trend in first ionization energy…
CHEMISTRY · Single correct · A Level · Chemistry · Periodicity and periodic trends · Periodicity and periodic trends
Problem
Which statement best describes the overall periodic trend in first ionization energy for main-group elements in the periodic table?
(a) It generally decreases from left to right across a period and decreases from top to bottom down a group.
(b) It generally increases from left to right across a period and decreases from top to bottom down a group.
(c) It generally decreases from left to right across a period and increases from top to bottom down a group.
(d) It generally increases from left to right across a period and increases from top to bottom down a group.