Which of the following statements is incorrec | vedclass

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(B) The maximum number of electrons in a shell is given by $2n^2$. For the third shell $(n=3)$,the maximum number of electrons is $2(3)^2 = 18$. Thus,

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An electron falling to the same energy level from any higher level always emits the same quantum of energy

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(B) The maximum number of electrons in a shell is given by $2n^2$. For the third shell $(n=3)$,the maximum number of electrons is $2(3)^2 = 18$. Thus,option $A$ is correct.When an electron falls from a higher energy level $(n_2)$ to a lower energy level $(n_1)$,the energy emitted is given by $\Delta E = E_{n_2} - E_{n_1}$. Since the energy levels are different,the energy emitted depends on the initial level $(n_2)$. Therefore,falling to the same level from different higher levels results in different amounts of energy being emitted. Thus,option $B$ is incorrect.The Balmer series corresponds to transitions where the electron falls to the $n=2$ level,which lies in the visible region. Thus,option $C$ is correct.The ground state of a hydrogen atom is the lowest energy state,which corresponds to $n=1$. Thus,option $D$ is correct.

$\lambda \ (nm)$	$500, 450, 400$
$v \times 10^{-5} \ (cm \ s^{-1})$	$2.55, 4.35, 5.35$

Which of the following statements is incorrect?

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