For a given value (n) of principle quantum number, the number of possible electr

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Question
For a given value (n) of principle quantum number, the number of possible electronic states are
Options
A. n
B. n²
C. n³
D. n

Correct Answer

n²

Explanation

The total number of states corresponding to a given value of n is equal to

For a given value (n) of principle quantum number, the number of possible electronic states are n n2 (2l + 1) = 1 + 3 + .... + [2(n-1) + 1] = n².

More questions

1. In an n-p-n transistor, the majority carriers in the base are
Options
A. electrons
B. holes
C. both holes and electrons
D. either holes or electrons

3. The expression for satellite link frequencies such as 4/6 GHz denotes that
Options
A. 4 GHz is the up-link and 6 GHz is the down-link frequency
B. 4 GHz is the down-link and 6 GHz is the up-link frequency
C. the system operates at a mean frequency of 5 GHz
D. one frequency is used as a back up for the other

6. Assertion (A): From the slope of the line in Figure, we can find permanent dipole moment of the molecules.
Reason (R): Total polarization of a polyatomic gas is given by P = N(a_e + a_i + ?²_p / 3kT)E.
Options
A. Both A and R are true and R is correct explanation of A
B. Both A and R are true but R is not correct explanation of A
C. A is true but R is false
D. A is false but R is true

8. In a zener diode
Options
A. the forward current is very high
B. sharp breakdown occurs at a certain reverse voltage
C. the ratio v-i can be negative
D. there are two p-n junctions

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