The probability density plots of 1s and 2s orbitals diagrams are given below

The density of dots in a region represents the probability density of finding electrons in the region.

On the basis of the above diagram which of the following statements is incorrect?

1. 1s and 2s orbitals are spherical in shape

2. The probability of finding the electron is maximum near the nucleus

3. The probability of finding the electron at a given distance is equal in all directions

4. The probability density of electrons for 2s orbital decreases uniformly as the distance from the nucleus increases

Subtopic:  Quantum Numbers & Schrodinger Wave Equation | Shell & Subshell |
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For the electrons of an oxygen atom. The correct statement among the following is-

1. Zeff for an electron in a 2s orbital is the same as Zeff for an electron in a 2p orbital.

2. An electron in the 2s orbital has the same energy as an electron in the 2p orbital.

3. Zeff for an electron in 1s orbital is the same as Zeff for an electron in a 2s orbital

4. The two electrons present in the 2s orbital have same spin quantum numbers ms but of opposite sign

Subtopic:  Quantum Numbers & Schrodinger Wave Equation | Shell & Subshell |
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Out of the following pairs of electrons, identify the pairs of electrons present in degenerate orbitals.

(a) (i) n=3, l=2, ml=-2, ms=-12           (ii) n=3, l=2, ml=-1, ms=-12

(b) (i) n=3, l=1, ml=1, ms=+12              (ii) n=3, l=2, ml=1, ms=+12

(c) (i)  n=4, l=1, ml=1, ms=+12           (ii) n=3, l=2, ml=1, ms=+12

(d) (i) n=3, l=2, ml=+2, ms=-12            (ii) n=3, l=2, ml=+2, ms=+12

 

1. (a), (d)

2. (b), (c)

3. (c), (d)

4. (b), (d)

Subtopic:  Shell & Subshell |
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The correct set of quantum numbers among the following is - 

         n       l      m

(a)     1      1        +2

(b)     2      1       +1

(c)     3      2        -2

(d)     3      4        -2

 

1. (a), (d)

2. (b), (c)

3. (c), (d)

4. (b), (d)

Subtopic:  Shell & Subshell |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology