Atomic size is the distance of outermost shell from centre of the atom. When we move from top
to bottom atomic radius increases due to increase in number of shell whereas from left to right
atomic radius decreases due to increase in force of attraction between electron and nucleus.
i. Which one of the element in second period will have smallest radius
a. Lithium b. Boron c. Fluorine d. Neon
ii. Which of the following arrangement of the elements Ca, Mg, Be is in order of
decreasing radius
a. Be>Mg>Ca b. Ca>Mg>Be c. Mg>Ca>Be d. Be>Ca>Mg
iii. Which element from first group will have largest radius
a. Fr b. H c. K d. Li
iv. As we move from top to bottom electrostatic force of attraction in a group
a. remain same c. increases
b. decreases d. decrease in some case and in some case increase
v. Out of given elements which one will have stronger metallic character
a. Li b. Na c. K d. Rb
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