
Chemistry Lecture (Week 2) - 2.1 Bohr's Atomic Model
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Chemistry
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12th Grade
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13 Slides • 13 Questions
1
Chemistry Lecture (Week 2)
2.1 Bohr's Atomic Model
NFTF Session
10/8/2021
11.00am-12.00pm
2
3
4
Multiple Choice
The following is the term used to represent shell EXCEPT
orbit
principle quantum number
energy level
quantum number
Principle Quantum Number
5
Multiple Select
Choose the correct Bohr's Atomic Model Postulates
The electron is circulating the nucleus in a specific shell/energy level
Electron can stays in between shell of the Hydrogen atom
The transition of electron occur when electron absorbed energy. Electron from ground state is excited/jumped to an excited state
The energy change of an electron can be calculated using a suitable formula.
6
Fill in the Blanks
Type answer...
7
Multiple Choice
_____________________ is the lowest energy level an electron will occupy in an atom at an ordinary condition
ground state
excited state
8
Multiple Choice
If energy is supplied, electron ___________ the energy and is _____________ from a lower energy level to a higher ones.
absorbed, excited
emitted, promoted
absorbed, demoted
emitted, demoted
9
10
Multiple Choice
Calculate the energy of electron at the energy level, n=6
6.055 x 10^-20 J
5.655 x10^-20 J
-6.055 x10^-20 J
1.320 x10^-20 J
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12
Multiple Choice
Which of the following line is correct when electron undergoes transition from excited state n= 7 to ground state n= 1
5th line
4th line
6th line
7th line
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14
15
Open Ended
ΔE =hv
what does h symbol represents?
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17
Multiple Select
Which of the equations related in the relationship between energy difference, wavelength and frequency of photon emitted.
ΔE =λhc
ΔE=hv
λ = vc
En=− RH (n21)
18
Multiple Choice
Choose the highest energy involved when an electron makes a transition.
n=4 to n=3
n=2 to n=1
n=4 to n=2
n=3 to n=1
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21
22
Fill in the Blanks
Type answer...
23
24
Multiple Choice
transition of electron from an excited state to a ground state of n = 3 formed a photon. Which of the following series belongs to this respective transition?
Balmer
Pfund
Brackett
Lyman
Paschen
25
Multiple Choice
transition of electron from an excited state to a ground state of n = 5 formed a photon. Which of the following series belongs to this respective transition?
Balmer
Pfund
Brackett
Lyman
Paschen
26
Chemistry Lecture (Week 2)
2.1 Bohr's Atomic Model
NFTF Session
10/8/2021
11.00am-12.00pm
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