Question

Select the correct statements from the following :

A. Atoms of all elements are composed of two fundamental particles.
B. The mass of the electron is 9.10939 x 10-31 kg.
C. All the isotopes of a given element same chemical properties.
D. Protons and electrons are collected known as nucleons.
E. Dalton’s atomic theory, regarded atom as an ultimate particle of matter.
Choose the correct answer from the options given below :

• A. C, D and E only
• B. A and E only
• C. B, C and E only
• D. A, B and C only

Answer 1

Answer: (C)

B, C and E only

Answer 2

As the question is statement based B, C, and E are the correct statements.
B. The mass of the electron is 9.10939 x 10-31 kg.
C. All the isotopes of a given element same chemical properties.
E. Dalton’s atomic theory, regarded atom as an ultimate particle of matter.
Therefore, the correct option is (C) : B, C and E only