Question

Question 2 : Give reasons:-
(i) Mass of an atom excludes mass of an electron.
(ii) Nucleus of an atom is charged.

Answer 1

hey friend ,
Here is your answer-
1)Electron excludes from mass of an atom because mass of electron is 1/1840 of mass of hydrogen that is negligible.
2) Nucleus contains protons and neutrons that's why nucleus is positive charged

Answer 2

HOLA MATE !!!

HOPE THIS HELPS YOU...

(i) Mass of the atom excludes mass of electron since electron has very small mass I.e, me = 9.1 × 10^(-31) kg .It is in terms of 10^(-31) which is very negligible.

(ii) Nucleus consists of Proton and neutrons which are positively and neutrally charged respectively ,but Nucleus does not constitute of electron hence it is positively charged.







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