Structure of At...

Cathode rays (electrons) have

Atoms of elements A and B, having same mass number but different atomic numbers are called

The isotopes of an element differ in

When alpha particles are sent through a thin metal foil ,most of them go straight through the foil because

The number of neutrons, in dipositive zinc ion Zn²⁺, with mass number 70 is

An electron in a 4s orbital, may have a magnetic quantum number value of

Which of the following statements is wrong?

Bohr model can explain

The principal quantum number of an atom is related to the

Electromagnetic radiation with maximum wave length is

Which of the following statements is correct?

Atoms may be regarded as comprising of protons neutrons and electrons. If the mass attributed to a neutron were halved and that attributed to the electron were doubled, the atomic mass of ₆C¹² would

It is impossible to determine the exact position and the exact energy of an electron, simultaneously. This statement is known as

The following question has four choices out of which ONLY ONE is correct.

The Aufbau's principle implies that a new electron will enter an orbital, for which,

Rutherford's alpha particles scattering experiment eventually led to the conclusion that