WorksheetsSTRUCTURE OF ATOMS
Total questions: 5
Worksheet time: 3mins
The wavelength of a electron and a neutron will become equal when
the velocity if a electrons is x time. The velocity of neutronthe value of x is ----------- (nearest integer)
1758
1578
8571
1758
Which of the following has a positive charge?
Protron
Neutron
Onion
None of ththe above
Rutherford carried out experiments in which a beam of alpha particles was directed at a thin piece of metal foil. From these experiments he concluded that:
electrons are massive particles.
the positively charged parts of atoms are moving about with a velocity approaching the speed of light.
the positively charged parts of atoms are extremely small and extremely heavy particles.
the diameter of an electron is approximately equal to that of the nucleus.
The maximum number of electrons that can be accommodated in a sublevel for which l = 3 is:
2
4
10
14
Naturally occurring rubidium consists of just two isotopes. One of the isotopes consists of atoms having a mass of 84.912 amu; the other of 86.901 amu. What is the percent natural abundance of the heavier isotope?
15%
28%
37%
72%
