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According to the Bohr's model, what is the maximum number of electrons for the second energy level?
8
2
4
6
8
According to the Bohr's atomic model, the maximum number of electrons that can be accommodated in a shell (energy level) is given by the formula 2n2, where n is the shell number. For the second energy level (or L shell, where n=2), the maximum number of electrons is 2(2)2=2├Ч4=8.
According to the Bohr's atomic model, the maximum number of electrons that can be accommodated in a shell (energy level) is given by the formula 2n2, where n is the shell number. For the second energy level (or L shell, where n=2), the maximum number of electrons is 2(2)2=2├Ч4=8.
Think of it like a theater seating arrangement where each row further from the stage (n) can hold more people (2n2) to maintain a stable balance, with the second row (L shell) specifically holding 8 seats.
2n2 тАФ the formula to determine the maximum capacity of an electron shell where n is the shell number.
Bohr's model defines energy levels (denoted by n=1,2,3,... or K,L,M,N,...) as quantized orbits where electrons reside. The capacity of these shells is limited by the Pauli exclusion principle, which manifests in the 2n2 rule, ensuring structural stability of the electron configuration.
The first shell (n=1) holds 2(1)2=2 electrons.
The second shell (n=2) holds 2(2)2=8 electrons.
The third shell (n=3) holds 2(3)2=18 electrons.
Bohr's model helps in understanding the stability of atoms and their chemical reactivity.
Explains the stability of atoms.
Predicts the line spectra of hydrogen.
Fails to explain spectra of atoms with more than one electron.
Does not account for the dual nature of matter (de Broglie hypothesis) or the Heisenberg uncertainty principle.
Basic electronic configuration of elements.
Understanding of valency and chemical bonding.
The shell n=2 is commonly referred to as the L-shell.
Option B (2) is the capacity for the first shell (n=1).
A is correct тАФ The maximum number of electrons for the second energy level (L shell) is determined by the formula 2n2, which yields 8.
Always remember the 2n2 rule when calculating the maximum capacity of any shell n in simple Bohr-model problems.
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