Which of the following is false? 

a) 
The angular momentum of an electron due to its spinning is given as , where can take a value of 1/2 
b) 
The angular momentum of an electron due to its spinning is given as , where can take the value of 
c) 
The azimuthal quantum number cannot have negative values 
d) 
The potential energy of an electron in an orbit is twice in magnitude as compared to its kinetic energy 
Which of the following is false? 

a) 
The angular momentum of an electron due to its spinning is given as , where can take a value of 1/2 
b) 
The angular momentum of an electron due to its spinning is given as , where can take the value of 
c) 
The azimuthal quantum number cannot have negative values 
d) 
The potential energy of an electron in an orbit is twice in magnitude as compared to its kinetic energy 
(b)
1. True.
2. False. The expression is that of component of angular momentum
3. True. The azimuthal quantum number has the value
4. True. The expressions are
product product and are two radioactive elements with halflife periods and (in years) and and If halflife periods are equal, disintegration rate at the start of disintegration with same concentration would be 

a) 
b) 
0.693 
c) 
Both (a) and (b) 
d) 
None of these 
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