The atomic radius tends to increase as you move down and to the left of the periodic table. Therefore, the order of the given arrangements in decreasing order of atomic radius is:
Li Be C B < Li Be B C < Li B Be C < C B Be Li
This is because moving from left to right, the atomic radius decreases due to an increase in effective nuclear charge, and moving up a group, the atomic radius decreases due to a decrease in the number of energy levels.
Which of the following arrangements is in decreasing order of atomic radius between Li Be C B, Li B Be C, Li Be B C and C B Be Li
1 answer