Question

what is atom what is meanby atomic number

Answer 1

Answer:

An atom is the smallest unit of ordinary matter that forms a chemical element. Every solid, liquid, gas, and plasma is composed of neutral or ionized atoms. Atoms are extremely small, typically around 100 picometers across.

Atomic number, the number of a chemical element in the periodic system, whereby the elements are arranged in order of increasing number of protons in the nucleus. Accordingly, the number of protons, which is always equal to the number of electrons in the neutral atom, is also the atomic number.

Answer 2

Answer:-

Atom is defined as the smallest particle of an element. which can or cannot be exist as freely.

☆ In other words - Atom is the smallest particle that takes part in the chemical reactions.

Atoms are considered to be

spherical.

➪ Atomic number of an element is considered equal to the number of protons present in the nucleus of the atom of that element.

Hope it helps you.