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Q1. What is the maximum number of electrons that can occupy the n=3 shell? (2021) 2021
Solution:
The maximum number of electrons in a shell is given by the formula 2n². For n=3, it is 2(3)² = 18.
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Q2. What is the value of the azimuthal quantum number (l) for a d orbital? (2021) 2021
Solution:
The azimuthal quantum number l for d orbitals is 2.
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Q3. Which of the following elements has the electronic configuration [Ne]3s²? (2016)
Solution:
Magnesium has the electronic configuration [Ne]3s².
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Q4. Which quantum number describes the orientation of an orbital? (2020) 2020
Solution:
The magnetic quantum number describes the orientation of an orbital.
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Q5. What is the shape of the s orbital? (2021) 2021
Solution:
The s orbital has a spherical shape.
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Q6. Which of the following quantum numbers describes the shape of an orbital? (2020) 2020
Solution:
The azimuthal quantum number (l) describes the shape of an orbital.
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Q7. How many orbitals are present in the d-subshell? (2023)
Solution:
The d-subshell has 5 orbitals.
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Q8. Which of the following particles has the least mass? (2020) 2020
Solution:
The mass of an electron is significantly less than that of protons and neutrons.
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Q9. How many orbitals are present in the p subshell? (2023)
Solution:
The p subshell has 3 orbitals (px, py, pz).
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Q10. Which of the following has the highest ionization energy? (2020) 2020
Solution:
Lithium (Li) has the highest ionization energy among the given options.
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