how big is an atom?

Answer 1

It varies from types of atom. Youre usually measuring in nanometres.

Answer 2

In chemistry and physics, an atom (Greek ἄτομος or átomos meaning "indivisible") is the smallest possible particle of a chemical element that retains its chemical properties. The word atom originally meant the smallest possible indivisible particle, but after the term came to have a specific meaning in science, atoms were found to be divisible and composed of smaller subatomic particles.

Most atoms are composed of three types of subatomic particles which govern their external properties:

electrons, which have a negative charge and are the least massive of the three;
protons, which have a positive charge and are about 1836 times more massive than electrons; and
neutrons, which have no charge and are about 1839 times more massive than electrons.
Protons and neutrons make up a dense, massive atomic nucleus, and are collectively called nucleons. The electrons form the much larger electron cloud surrounding the nucleus.

Smallest recognised division of a chemical element :

Properties :
Mass: ≈ 1.67 × 10-27 to 4.52 × 10-25 kg
Electric charge: zero(if the number of electrons equal of protons in an atom)
Diameter (approx.) 100 pm = 1 Angstrom: 100 pm(He) to 670 pm(Cs) [1]

Answer 3

Hi. It is usually considered to be the diameter of it's outer electron shell. This is different for each atom.

Answer 4

1 ångström is the SI units for the average size of an atom which is 0.1 nm

Answer 5

An atom is the smallest posibble patical of a chemical element.

Answer 6

An atom of what? They are not all the same.

Answer 7

depends on the atom

Answer 8

Apparently about a million can sit in a space the size of a full-stop.

Answer 9

2 small 2 imagin

Answer 10

angstroms (10^-10 m)