Embibe Experts Solutions for Chapter: Atomic Structure, Exercise 1: AP EAPCET Medical 2018 (22-Apr Shift-1)

The value of Planck's constant in electron volts $\left(\mathrm{eV}\right)$ is _______

The de-Broglie wavelength (in $\mathrm{m}$) of a sand particle of mass $1 \mathrm{mg},$ blown by a wind of speed $20 \mathrm{m}·{\mathrm{s}}^{-1}$ is approximately _______

How many spectral times will be observed for a hydrogen atom, when an electron retums from $7^{\mathrm{th} }$ shell to $3^{\mathrm{rd} }$ shell ?

Identify the correct statements regarding Balmer series: The ware number of each line in the spectrum of atomic hydrogen is given by the equation $\overline{\mathrm{v}}={\mathrm{R}}_{\mathrm{H}}\left(\frac{1}{{\mathrm{n}}_1^2}-\frac{1}{{\mathrm{n}}_2^2}\right).$ where ${\mathrm{R}}_{\mathrm{H}}$ is a constant and ${\mathrm{n}}_1$ and ${\mathrm{n}}_2$ are integers.
(i) As ware length decreases, the lines in the series converge
(ii) The integer ${\mathrm{n}}_1$ is equal to $2$
(iii) The ionization energy of hydrogen can be calculated from the wave number of these lines
(iv) The line of longest wavelength corresponds to ${\mathrm{n}}_2=3$

What would be the wavelength of the spectral line in Balmer series of the spectrum, having the longest wavelength? Given $R_H=109677{ \mathrm{cm}}^{-1}$

If a cricket ball of weight $0.1 \mathrm{kg}$ has an uncertainty of $0.15 \mathrm{m}·{\mathrm{s}}^{-1}$ in its velocity, then the uncertainty in the position of the cricket ball is $\underline{ }$

If it is known that an electron is revolving around the nucleus at a speed of $0.95 \mathrm{km}·{\mathrm{s}}^{-1},$ with an accuracy of $0.02\%,$ then find its position. Given mass of the electron is $9.1\times {10}^{-31} \mathrm{kg}$ and $h=6.6\times {10}^{-34} \mathrm{kg}·{\mathrm{m}}^2·{\mathrm{s}}^{-1}$

The correct order of total number of node of atomic orbitals is _______