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Q. No.
Assertion(A): \(h/\pi\) is the angular momentum of the electron in the second orbit of He+.
Reason(R): Angular momentum of an electron in a subshell is given by \(\sqrt{l(l+1)} \times {h\over 2\pi}\) .

1. Both A and R are true and R is the correct explanation of A.
2. Both A and R are true but R is not the correct explanation of A.
3. A is true and R is false.
4. A and R both are false.
 
Subtopic:  Bohr's Theory |
 60%
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Assertion (A): Angular momentum of the electron in the orbit that has four subshells is \(2h\over\pi\).
Reason (R): Angular momentum of the electron is quantized.
 
1. Both (A) and (R) are True and (R) is the correct explanation of (A).
2. Both (A) and (R) are True but (R) is not the correct explanation of (A).
3. (A) is True but (R) is False.
4. (A) is False but (R) is True.
Subtopic:  Bohr's Theory |
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Assertion (A): The radius of the second orbit of He+ is equal to that of the first orbit of hydrogen.
Reason (R):  The radius of an orbit in hydrogen-like species is directly proportional to n and inversely proportional to Z.

 

1. Both  (A) and (R) are True and (R) is the correct explanation of the (A).
2. Both (A) and (R) are True and (R) is not the correct explanation of the (A).
3. (A) is True but (R) is False.
4. Both (A) and (R) are False.
Subtopic:  Bohr's Theory |
 72%
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Assertion (A):  The angular momentum of an electron in an atom is quantized.
Reason (R):  In an atom, only those orbits are permitted in which the angular momentum of the electron is a natural number multiple of h/2π.
 
1. Both (A) and (R) are True and (R) is the correct explanation of (A).
2. Both (A) and (R) are True but (R) is not the correct explanation of (A).
3. (A) is True but (R) is False.
4. (A) is False but (R) is True.
Subtopic:  Bohr's Theory |
 81%
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Given below are two statements: 
Assertion (A): Bohr’s orbits are also called stationary states.
Reason (R): Electrons are stationary in an orbit.
In light of the above statements, choose the correct answer from the options given below:
1. Both (A) and (R) are True and (R) is the correct explanation of (A).
2. Both (A) and (R) are True but (R) is not the correct explanation of (A).
3. (A) is True but (R) is False.
4. (A) is False but (R) is True.
Subtopic:  Bohr's Theory |
 70%
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