Which of the following reason correctly justifies that “Fluorine (72pm) has smaller atomic radius than Lithium (152pm)”?
A. F and Li are in the same group. Atomic size increases down the group
B. F and Li are in the same period. Atomic size increases across the period due to increase in number of shells
C. F and Li are in the same group. Atomic size decreases down the group
D. F and Li are in the same period and across the period atomic size/radius decreases from left to right.
Answer:A
Which of the following reason correctly justifies that “Fluorine (72pm) has smaller atomic radius than Lithium (152pm)”?
A. F and Li are in the same group. Atomic size increases down the group B. F and Li are in the same period. Atomic size increases across the period due to increase in number of shells C. F and Li are in the same group. Atomic size decreases down the group D. F and Li are in the same period and across the period atomic size/radius decreases from left to right.