How does atomic radius vary in a period and in a group? How do you explain the variation?
Atomic radius typically decreases from left to proper throughout a period. This is due to the fact inside a period, the outer electrons are gift withinside the identical valence shell and the atomic quantity will increase from left to proper throughout a period, ensuing in an extended powerful nuclear charge. As a result, the enchantment of electrons to the nucleus will increase. On the alternative hand, the atomic radius typically will increase down a group. This is due to the fact down a group, the principal quantum quantity (n) will increase which leads to an growth of the space among the nucleus and valence electrons.
