WorksheetsAtomic structure
Total questions: 15
Worksheet time: 11mins
The anode rays discovered by
Goldstein
Crooks
Chadwick
Thomson
Neutron was discovered by
Rutherford
J.j Thomson
Chadwick
Moseley
Of the following the one that is not an elementary particle
Proton
Neutron
Alpha particle
Electron
The number of neutrons present in F19 is
19
9
10
28
The coloured radiation with lowest energy is
Red
Blue
Green
Yellow
Planck's constant has a unit of
Work
Energy
Angular momentum
Linear momentum
When an electron falls from higher orbit to third orbit in hydrogen atom the spectral line observed
Balmer series
Lyman series
Brackett series
Paschen series
Bohr's model can explain
The spectrum of hydrogen atom only
The spectrum of atom or ion containing one electron only
The spectrum of hydrogen molecule
The solar spectrum
Bohr's model of an atom is based on
Quantum theory
Dalton's atomic theory
Theory of electrolytic dissociation
Law of mass action
The number of atomic orbitals with Quantum numbers n=3,l=1,m=0
1
6
3
5
The total electron spin of an atom with d7 configuration amongst the following
2
1
1/2
3/2
Witch orbital doesn't posses nodal plane
S
P
d
f
Planck's constant is
6.625 X 1027 erg.sec
6.625 X 10-27 erg.sec
6.625 X 10 - 27 erg/sec
None
What is isobars
Elements having same mass numbers but different atomic number
Elements having same atomic number but different mass number
Elements having different atomic number and different mass number
All of the above
The De- broglie wavelength associated with a microparticle moving with high speed is
Directly proportional to its energy
Inversely proportional to its momentum
Inversely proportional to its mass only
Directly proportional to its momentum
