Rutherford’s Experiment AND X-Rays

A clue to the arrangement of positive and negative particles within atoms was finally provided by the experiments of ________.

• Rutherford

• bohr

• chadwick

• J.J.Thomson

Rutherford and his co-workers performed several experiments on the scattering of ________ particles by thin films.

• infrared

In Rutherford experiment, one particle in 8000 suffered a deflection greater than ________ and remerged on the same side.

• 45

• 90

• 120

• 180

The mass of the ________ is concentrated in its nucleus.

• element

• particle

• atom

• molecule

The nucleus carries a ________ charge.

• negative

• positive

• NEUTRAL

• slightliy negative

There must be ‘________’ number of negatively charged electrons outside the nucleus.

• n

• z

• m

• a

The greater part of the atomic volume comprises of empty space in which the ________ revolve and spin.

• proton

• electron

• neutron

• positron

In the positive charge ‘Ze’ on the nucleus Z was found to be nearly ________ the atomic mass.

• double

• half

• one third

• one forth

________ lose energy in the form of radiations.

• proton

• electron

• positron

• neutron

________ gives discontinuous spectrum.

• element

• atom

• particle

• molecule