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Atomic mass of an element is equal to the sum of?
- a)Electron and neutron
- b)Electron and proton
- c)Proton and neutron
- d)None of the above
Correct answer is option 'C'. Can you explain this answer?
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Verified Answer
Atomic mass of an element is equal to the sum of?a)Electron and neutro...
Atomic Mass is the sum of no. of protons and neutrons.
Most Upvoted Answer
Atomic mass of an element is equal to the sum of?a)Electron and neutro...
The sub-shell with n = 6, l = 2
To understand why the correct answer is option 'C' (10 electrons), let's break down the given information and explore the electron capacity of the sub-shell.
Understanding the notation
The notation n = 6, l = 2 refers to the quantum numbers associated with an electron in an atom. Here, "n" represents the principal quantum number, and "l" represents the azimuthal quantum number. The principal quantum number determines the energy level or shell in which the electron resides, while the azimuthal quantum number determines the shape of the sub-shell.
Quantum numbers and electron capacity
The principal quantum number (n) determines the maximum number of electrons that can be accommodated in a shell, while the azimuthal quantum number (l) determines the number of sub-shells within that shell.
The formula to calculate the maximum number of electrons that can be accommodated in a sub-shell is given by 2(2l + 1). Let's apply this formula to the given sub-shell:
l = 2
2(2l + 1) = 2(2*2 + 1) = 2(4 + 1) = 2(5) = 10
Therefore, the sub-shell with n = 6, l = 2 can accommodate a maximum of 10 electrons.
Other options explained
a) 12 electrons: This option is incorrect because the formula for the maximum number of electrons in a sub-shell does not yield 12 for the given values of n and l.
b) 36 electrons: This option is incorrect because it is significantly higher than the maximum number of electrons that can be accommodated in a sub-shell with n = 6, l = 2.
d) 72 electrons: This option is incorrect because it is even higher than option 'b' and does not align with the maximum electron capacity of the given sub-shell.
Therefore, the correct answer is option 'C' (10 electrons) as it aligns with the maximum number of electrons that can be accommodated in a sub-shell with n = 6, l = 2.
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Atomic mass of an element is equal to the sum of?a)Electron and neutro...
It is because the electron has neglicible mass when compared to the nucleons
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