EASY
JEE Main/Advance
IMPORTANT
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Which orbital is non-directional?

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Important Questions on Structure of Atom

EASY
JEE Main/Advance
IMPORTANT
In case of dx2-y2 orbital
HARD
JEE Main/Advance
IMPORTANT
In an atomic orbital, the sign of Lobes indicates the:
EASY
JEE Main/Advance
IMPORTANT
The correct set of four quantum numbers for the valence electron of rubidium Z=37 is:​​​​
EASY
JEE Main/Advance
IMPORTANT
After np orbitals are filled, the next orbital filled will be
HARD
JEE Main/Advance
IMPORTANT
If n and l are respectively the principal and azimuthal quantum numbers, then the expression for calculating the total number of electrons in any orbit is-
EASY
JEE Main/Advance
IMPORTANT
The quantum numbers +12 and -12 for the electron spin represent:
EASY
JEE Main/Advance
IMPORTANT
The latent heat of fusion of ice is 330 Jg-1. Calculate the number of photons of radiation of frequency 5×1013 s-1 to cause the melting of 1 mole of ice. Take h=6.6×1034 J.S. Express your answer as X×1022, what is the value of 'X'.
MEDIUM
JEE Main/Advance
IMPORTANT
The work function for a metal is 40 eV. To emit photo electrons of zero velocity from the surface of the metal the wavelength of incident light should be x nm. Find value of x.