The electrons present in K-shell of the atom will differina)principal quantum numberb)azimuthual quantum numberc)magnetic quantum numberd)spin quantum numberCorrect answer is option 'A'. Can you explain this answer?

Question

Answer

Correct answer is d

Answer

Answer

For K shell there are 2 electrons present which has same principal azimuthal and magnetic quantum numbers.... they differ only in spin quantum number.... that is,, one electron will have +1/2 and the other -1/2..

Answer

K means shell no. 1 N=1 principle quantum no.

Answer

Introduction:
The K-shell is the innermost electron shell of an atom. It is closest to the nucleus and has the lowest energy level. The electrons in the K-shell play a crucial role in determining the chemical properties of an atom. In this question, we need to identify which quantum number(s) differ for the electrons present in the K-shell.

Explanation:
To understand why the principal quantum number (n) differs for electrons in the K-shell, let's review the concept of electron shells and quantum numbers.

1. Electron Shells:
Electron shells are energy levels or orbitals where electrons can be found around an atomic nucleus. The shells are labeled with letters (K, L, M, etc.) and are further divided into subshells.

2. Quantum Numbers:
Quantum numbers are used to describe the specific properties of electrons in an atom. There are four quantum numbers:

- Principal Quantum Number (n): Determines the energy level or shell of an electron. It can have integer values starting from 1. The higher the value of n, the higher the energy level and the farther the electron is from the nucleus.

- Azimuthal Quantum Number (l): Specifies the subshell or orbital within a given shell. It can have values ranging from 0 to (n-1). The azimuthal quantum number determines the shape of the orbital (s, p, d, f).

- Magnetic Quantum Number (ml): Specifies the orientation or spatial distribution of the orbital within a subshell. It can have integer values ranging from -l to +l. The magnetic quantum number determines the number of orbitals within a subshell.

- Spin Quantum Number (ms): Describes the spin state of an electron in an orbital. It can have values of +1/2 or -1/2, representing the two possible spin directions.

Conclusion:
In the given question, the correct answer is option 'A' (principal quantum number) because the electrons in the K-shell of an atom have a fixed value of n. The principal quantum number for the K-shell is always 1, as it is the innermost shell and has the lowest energy level. The other quantum numbers (azimuthal, magnetic, and spin) may vary for different electrons within the K-shell, but the principal quantum number remains the same.

Answer

4

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