Question

Give the salient features of “Modern Atomic Theory

Answer 1

(i) An atom is no longer indivisible. (ii) Atoms of the same element may have different atomic mass. Eg: isotopes 17Cl35, 17Cl37. (ii) Atoms of different elements may have the same atomic masses.

Answer 2

Answer:

Atoms have protons and neutrons in the center, making the nucleus, while the electrons orbit the nucleus. The modern atomic theory states that atoms of one element are the same, while atoms of different elements are different. Atoms of the same element can have different numbers of neutrons, however. Hope it helps you!