Science, asked by a9kshitajayan, 1 year ago

what is atomic size in periodic table

Answers

Answered by kulsoomunnisa
1
The atomic radius of a chemical element is a measure of a size of atoms. It represents the mean distance from the  nucleus to the boundary of the surrounding cloud of electrons . Atomic radii vary in a predictable manner across the periodic table.. 
Answered by BrainlyPromoter
0
Atomic size, which is also known as atomic radius, is defined as the distance between the centre of nucleus and the outermost or valence shell.

Various units are used to measure the atomic size:

1. Angstrom
1 Angstrom = 10^(-10) m

2. Picometre
1 Picometre = 10^(-12) m

Atomic size of some elements:
1. Hydrogen ( H ) - 37 pm

2. Lithium ( Li ) - 152 pm

3. Potassium ( K ) - 231 pm

• Atomic size increases down a period whereas it decreases across a group.
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