NEET Chemistry Orbitals MCQ Question
Which of the following combinations regarding orbitals and their properties is correct?
The probability density |ψ|² is always positive. 2. The 4f subshell can hold up to 14 electrons. 3. Each orbital in a subshell must be singly occupied before pairing occurs.
The probability density |ψ|² can be negative. 2. The 3p subshell can hold 6 electrons. 3. Pairing occurs before all orbitals are singly occupied.
The value of ml for l=1 can range from -2 to +2. 2. A 2p orbital has three orientations. 3. The boundary surface diagram represents the shape of an orbital.
The 1s orbital is spherical. 2. All orbitals can hold a maximum of 2 electrons regardless of their shape. 3. The only value of ml for the s orbital is 1.
Correct Answer
Detailed Explanation
The first option is correct because |ψ|² is indeed always positive, the 4f subshell can hold up to 14 electrons, and according to Hund's rule, each orbital must be singly occupied before pairing occurs.
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