Question

what is atomic radius? what is it's units?

please help me guys​

Answer 1

Answer:

picometers

The atomic radius (r) of an atom can be defined as one half the distance (d) between two nuclei in a diatomic molecule. Atomic radii have been measured for elements. The units for atomic radii are picometers, equal to 10−12 meters.

Explanation:

Pʟs ᴍᴀʀᴋ ᴀs ʙʀᴀɪɴʟɪᴀsᴛ ᴀɴᴅ ғᴏʟʟᴏᴡ ᴍᴇ✌️

Answer 2

Answer:

Explanation:

Atomic size:

The distance from the center of the nucleus of an isolated atom to the outermost shell containing electrons is known as atomic size. The unit of measurement is Angstroms (A˚)

Variation in Group:

In a group, the atomic radius increases downwards. In a group, as we move from one element to the other, there is always an increase in the number of electrons shells by one so size increases.

Variation in the period:

In a period, as we go from left to right, the atomic radius decreases because of an increase in the effective nuclear charge. (since electrons gradually added in the same shell