Worksheetsatomic structure
Total questions: 20
Worksheet time: 10mins
Spectrum is a group of.......
Wavelengths
Frequencies
Both wavelength and frequency
None of the above
What is the relationship between wavelength and frequency?
Inversely proportional
Directly proportional
Same
We cannot say
...... is the Plank's equation.
C = nƛ
E = hv
E = mc2
None of the above
The value of Plank's constant in S.I. system is......
6.6256 x 10-34 JS
6.6256 x 10-27 JS
6.6256 x 10-31 JS
6.6256 x 10-37 JS
The value of Plank's constant in C.G.S. system is......
6.6256 x 10-34 erg S
6.6256 x 10-31 erg S
6.6256 x 10-27 erg S
6.6256 x 10-30 erg s
As long as electrons revolve in a ...... orbit, its energy be neither lost nor be gained.
valency
stationary
core
none of the above
Light is a ...... wave.
Transverse
Longitudinal
Electromagnetic
Electrical
The speed of light in vacuum is......
3 x 108 m/s
2 x 108 m/s
3 x 108 cm/s
3 x 108 Km/s
Sodium vapor emits the light in ...... colour
red
orange
green
yellow
Line spectrum is also known as........
Discrete spectrum
Continuous spectrum
Both discrete and continuous spectra
None of the above
Who proposed elliptical orbits?
Neil's Bohr
Sommerfeld
Lande
Uhlenbeck
Splitting of spectral lines in a magnetic field are called .......
Stark effect
Zeeman effect
Moeller's effect
Smith's effect
Orbitals of same energy are called.....
s, p, d and f orbitals.
Common orbitals
Degenerate orbitals
Reproduced orbitals
Magnetic Quantum number values are from ...... to ......
0, 1 ... (n-1)
-l to +l
1, 2, 3, ......
All the above
"It is not possible to measure accurately the position and velocity of an electron."
Zeeman effect
Heisenberg's uncertainty theory
Bohr and sommerfeld's theory
Lewis De Brogle's dual nature of an electron
The number of electrons can be filled in an orbit is....
n2
2n2
2n2 + 1
2 (n+1)
It indicates....
visible spectrum
Micro waves
Radio waves
Infrared radiation
No two electrons in an electronic configuration of an atom have all four quantum numbers same is a ...... principle
Plank's principle
Aufbau's principle
Hund's rule
Pauli's exclusion principle
It gives the information about
increasing order of the energy of atomic orbitals
decreasing order of the energy of atomic orbitals
Normal order of atomic orbital
we cannot say anything about the diagram
"The pairing of electrons takes place in degenerate orbitals only after filling all the available degenerate orbitals one electron each" is a ....
Aufbau's principle
Hund's rule
Pauli's exclusion principle
All the aboce
