NEET Chemistry · Flashcards

Atomic Structure Flashcards for NEET — 19 cards

This deck has 19 flashcards on Atomic Structure for NEET Chemistry, from NCERT Class 11. It follows the NCERT chapter Structure of Atom.

Atomic Structure, covering everything from Bohr's model and quantum numbers to the intricate rules of electronic configuration and dual nature of matter.

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First 8 of 19 Atomic Structure flashcards

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Card 1 of 19
What is the Einstein's Photoelectric Equation?
Hint: Energy of photon = Work function + Kinetic Energy
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Answer
Where $h\nu$ is incident energy, $h\nu_0$ (or $\Phi$ ) is the threshold energy (work function), and $K.E._{max}$ is the maximum kinetic energy of the ejected electron.
Card 2 of 19
What are the spectral regions for the Lyman and Balmer series in the hydrogen emission spectrum?
Hint: Lyman is highest energy, Balmer is what we can see.
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Answer
Card 3 of 19
State the Rydberg formula for calculating the wavenumber of hydrogen spectral lines.
Hint: Don't forget Z^2 for hydrogen-like species!
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Answer
Where $R_H = 109677 \text{ cm}^{-1}$ (Rydberg constant), $Z$ is atomic number, and $n_2 > n_1$ .
Card 4 of 19
What is Bohr's postulate regarding the angular momentum of an electron?
Hint: mvr = ...
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Answer
$mvr = \frac{nh}{2\pi}$ (where $n = 1, 2, 3, \dots$ )
Card 5 of 19
Write the formulas for the Radius ( $r_n$ ) and Energy ( $E_n$ ) of the $n^{th}$ Bohr orbit for hydrogen-like species.
Hint: Radius is proportional to n^2. Energy is proportional to 1/n^2.
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Answer
$r_n = 52.9 \frac{n^2}{Z} \text{ pm}$ $E_n = -2.18 \times 10^{-18} \frac{Z^2}{n^2} \text{ J}$ (or $-13.6 \frac{Z^2}{n^2} \text{ eV}$ )
Card 6 of 19
What are the Stark effect and the Zeeman effect? (Limitations of Bohr's Model)
Hint: Stark = E-field, Zeeman = B-field
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Answer
Stark effect: Splitting of spectral lines in the presence of an electric field. Zeeman effect: Splitting of spectral lines in the presence of a magnetic field.
Card 7 of 19
State the de Broglie wavelength equation relating to the dual nature of matter.
Hint: Wavelength depends inversely on momentum.
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Answer
It can also be written in terms of Kinetic Energy ( $K$ ): $\lambda = \frac{h}{\sqrt{2mK}}$
Card 8 of 19
State the Heisenberg Uncertainty Principle.
Hint: Delta x times Delta p...
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Answer
$\Delta x \cdot \Delta p \ge \frac{h}{4\pi}$ OR $\Delta x \cdot \Delta v \ge \frac{h}{4\pi m}$

11 more cards in this deck

Atomic Structure Flashcards for NEET — 19 cards

First 8 of 19 Atomic Structure flashcards

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