Atomic Structure Set 8

Results

#1. Splitting of spectral lines when atoms are subjected to strong electric field is called

Zeeman effect

Stark effect

Photoelectric effect

Compton effect

#2. The velocity of photon is

independent of its wavelength

depends on its wavelength

equal to square of its amplitude

depends on its source

#3. The nature of positive rays depend on

the nature of electrode

the nature of discharge tube

the nature of residual gas

all of the above

#4. The wave number of the light emitted by a certain source is 2 x 106 m. The wavelength of this light is

500 nm

500 m

200 nm

5 x 10–1 m

#5. Rutherford’s model of atom failed because

the atom did not have a nucleus and electrons

it not account for the attraction between protons and neutrons

it did not account for the stability of the atom

there is actually no space between the nucleus and the electrons

#6. Bohr’s model of atom is contradicted by

Planck’s quantum theory

Pauli exclusion principle

Heisenberg uncertainty principle

All of the above

#7. Quantum number value for 2p orbitals are

#8. In the ground state of an atom, the electron is present

in the nucleus

in the second shell

nearest to the nucleus

farthest from the nucleus

#9. When the 6d orbital is complete the entering electron goes into

#10. Orbitals having same energy are called

hybrid orbitals

valence orbitals

degenerate orbitals

d–orbitals

#11. The e/m value for the positive rays is maximum for

hydrogen

helium

nitrogen

oxygen

Finish