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JEE CHEMISTRY MCQ: STRUCTURE OF ATOM

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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 \times 10^{-31} \mathrm{~kg}

.

C. All the isotopes of a given element show same chemical properties.

D. Protons and electrons are collectively known as nucleons.

E. Dalton's atomic theory, regarded the atom as an ultimate particles of matter.

Choose the correct answer from the options given below.

View answer and explanation

Correct option: B

B, C and E only

Option A (4) is correct because each boron atom in diborane (

B_2H_6

) is

sp^3

hybridized, involving four orbitals.

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