The _________ of an atom is concentrated in the nucleus.
Mass
Charge
Volume
Density
In alpha particle scattering experiment most of the particles passed without deflection because of
Most of the place in the atom must be empty
Repulsion with nucleus
Repulsion with electrons
Attraction with electrons
The charge and mass (e/m) ratio of electron is
1.76 x 1011 C/kg
1.6 x 10-19 C
9.1 x 10-31 Kg
9.1 x 10-24Kg
Elements having the same mass number and different atomic number is called
Isobars
Isotopes
Isochores
Isotones
The path of only some alpha particles deviate because of
Nucleus repels positively charged alpha particles
Neutrons deviate the alpha particles
Electrons deviate the alpha particles
Meson deviates the alpha particle
Which of the following is an example of isotopes?
6P14 17Q35
17Q35 7R14
17Cl35 17Cl37
6P14 7R14
______________ is the name of isotope with one neutron.
Protium
Deuterium
Tritium
Oxygen
_____ is a metal which can be made into very thin foil.
Copper
Calcium
Gold
Potassium
__________ is used in nuclear reactors.
Heavy water
