Embibe Experts Solutions for Chapter: Atomic Structure, Exercise 1: BITSAT 2017

The wavelength corresponding to maximum energy for hydrogen is $91.2 \mathrm{nm}$. The corresponding wavelength for ${\mathrm{He}}^{+}$ ion is

In a homonuclear molecule, which of the following set of orbitals is degenerated?

If the photon of wavelength $150 \mathrm{pm}$ strikes an atom and one of its inner bound electron is ejected out with a velocity of $1.5\times {10}^7 \mathrm{m}/\mathrm{s}$, what is the energy with which it is bound to the nucleus?

If $\left[\frac{0.53\times {10}^{-10}}{4}\right]$ metre is the radius of smallest electron orbit in hydrogen like atom, then the atom is

In an atom, an electron is moving with a speed of $600 \mathrm{m}/\mathrm{s}$ with an accuracy of $0.005\%$. Certainty with which the position of the electron can be located is ($\mathrm{h}=6.6\times {10}^{-34} \mathrm{kg} {\mathrm{m}}^2 {\mathrm{s}}^{-1}$, mass of electron,  ${\mathrm{m}}_{\mathrm{e}}=9.1\times {10}^{-31} \mathrm{kg}$)

The orbital angular momentum of an electron is $2\mathrm{s}$ orbital is

Which of the following are isoelectronic species?

I. $\stackrel{+}{\mathrm{C}}{\mathrm{H}}_3$

II. ${\mathrm{NH}}_2^{-}$

III. ${\mathrm{NH}}_4^{+}$

IV. ${\mathrm{NH}}_3$

Which of the following is an incorrect set of quantum members?