(A) Neutral
(B) Polar
(C) Covalent
(D) Non Polar
A molecule whose charge distribution is not perfectly symmetrical is called?
(A) An electrolyte
(B) A polar molecule
(C) A non polar molecule
(D) An organic molecule
There are no expected lines absent from the spectra of?
(A) The halogens
(B) The alkali metals
(C) Hydrogen
(D) The inert gas
Two electron in a hellium atom?
(A) Occupy different sub shell
(B) Have parallel spin
(C) Occupy different shell
(D) Have opposite spin
The energy of a quantum state is primarily depends upon the quantum number?
(A) n
(B) m
(C) s
(D) l
A hydrogen atom is in its ground state when its orbital electron?
(A) Is within the nucleous
(B) Escape from it
(C) Is in its lowest energy level
(D) Is stationary
The total energy of an atomic electron is?
(A) Zero
(B) Less than zero
(C) More than zero
(D) All of the above
When a beam of light is used to determine the position of an object, the greatest accuracy is obtained if the light?
(A) Is polarized
(B) Have shorter wavelength
(C) Have long wavelength
(D) Has a low intensity