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  • Select the correct statement from the following: A. Atoms of all elements are composed of two fundamental particles. B. The mass of the electron is <img alt="9 .10939 \times 10^{-31}k

Select the correct statement from the following:
A. Atoms of all elements are composed of two fundamental particles.
B. The mass of the electron is 9 .10939 \times 10^{-31}kg.
C. All the isotopes of a given elements show same chemical properties.
D. Protons and electrons are collectively known as nucleons
E. Dalton's atomic theory, regarded the atom as an ultimate particle of matter.
Choose the correct answer from the option given below:
 

Option: 1

A, B and C only
 


Option: 2

C, D and E only
 


Option: 3

A and E only
 


Option: 4

B, C and E only
 


Answers (1)

best_answer

Statement (A) and (D) are incorrect.
Because → Atoms of all element are composed of there fundamental particles (e, p, n)
(D) 'Protons' & 'Neutrons' are collectively known as nucleons.

Posted by

Ritika Harsh

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