Question # 1

For principle quantum number n=4, the total number of orbitals having l = 3 is

Choose an answer

3

7

5

9

Anode is the surface on which probability of finding electron is:

Choose an answer

50%

Less than 10%.

More than 95%.

Zero.

The total values of magnetic quantum number of subshell are five, the subshell is

Choose an answer

S-subshell

P-subshell

D-subshell

F-subshell

The radius of second Bohr's orbit is

Choose an answer

0.053 nm

0.053/4 nm

0.053 x 4 nm

0.053 x 20 nm

In which of the following pairs, the numbers of electrons in the outermost shell are different?

Choose an answer

As,Sb

Ge,Sn

In,pt

Se,Te

Rutherford's model of atom failed because:

Choose an answer

The atom did o have a nucleus and electrons

It did not account fro the attraction b/w protons and neutrons

It did no account for the stability of the atom.

There is actually no space b/w the nucleus ad the electrons.

Heaviest particle is

Choose an answer

Meson

Neutron

Proton

Electron

The electronic configuration of an atom/ion can be defined by the following

Choose an answer

Aufbau principle

Pauli's exclusion principle

Hund's Rule

All the above

In Millikan method the oil droplet falls under the force of gravity but it moves upward due to

Choose an answer

Electric field

Magnetic field

Incident light

X-rays

The energy of the first electron is helium will be

Choose an answer

-13.6 eV

-54.4 eV

-5.44 eV

zero

Number of neutrons in heavy hydrogen atom is

Choose an answer

0

1

2

3

When electrons revolve in stationary orbits

Choose an answer

There is no change in energy level

They vecome stationary

They are gaining kinetic energy

There is increase in energy

E = hv is the

Choose an answer

Spectral equation

Plank's equation

de Broglie's equation

None of these

Neutrons was discovered by

Choose an answer

Mosely

Milliken

Chadwick

Ruherford

Energy of electron in the infinite Bohr orbit of H-atom is

Choose an answer

0 KJ/mole

1 KJ/mole

-1 KJ/mole

-1313.32 KJ/mole

The principle quantum number describes

Choose an answer

The distance form the nucleus

The shape of the orbital

The orientation of the orbital

The spin of the electron

Rutherford's experiment led to the discovery of

Choose an answer

Nucleus

Electron

Proton

alpha particle

More Classes

Other Links

ECAT Chemistry Chapter 5 Atomic Structure Online Test MCQs With Answers

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer