Structure of Atom

Consider the following reactions \(\mathrm{NiS}+\mathrm{HNO}_3+\mathrm{HCl} \rightarrow \mathrm{A}+\mathrm{NO}+\mathrm{S}+\mathrm{H}_2 \mathrm{O}\) \(\begin{aligned} \mathrm{A}+\mathrm{NH}_4 \mathrm{OH}+\mathrm{H}_3…

$1\mathrm{kg}$ of $0.75$molal aqueous solution of sucrose can be cooled up to $-4^{\circ}C$ before freezing. The amount of ice (in $g$) that will be separated out is ___________. (Nearest integer) [Given :…

The wave function, $\psi_{n,l,m_{l}}$ is a mathematical function whose value depends upon spherical polar coordinates $(r,\theta,ϕ)$ of the electron and characterized by the quantum numbers $n,l$ and $m_{l}$ . Here $r$…

The wave function, $\psi_{n,l,m_{l}}$ is a mathematical function whose value depends upon spherical polar coordinates $(r,\theta,ϕ)$ of the electron and characterized by the quantum numbers $n,l$ and $m_{l}$ . Here $r$…

The wave function, $\psi_{n,l,m_{l}}$ is a mathematical function whose value depends upon spherical polar coordinates $(r,\theta,ϕ)$ of the electron and characterized by the quantum numbers $n,l$ and $m_{l}$ . Here $r$…

$P$ is the probability of finding the $1s$ electron of the hydrogen atom in a spherical shell of infinitesimal thickness, $dr$, at a distance, $r$, from the nucleus. The volume of this shell is $4\pi r^{2}dr$. The…

Bombardment of aluminium by $\alpha$-particle leads to its artificial disintegration in two ways, (i) and (ii) as shown. Products $X, Y$ and $Z$ respectively are

Match the entries in Column I with the correctly related quantum number(s) in Column II. Indicate your answer by darkening the appropriate bubbles of the $4 \times 4$ matrix given in the ORS.

Statement 1 The plot of atomic number ( $Y$-axis) versus number of neutrons ( $x$-axis) for stable nuclei shows a curvature towards $X$-axis from the line of $45^{\circ}$ slope as the atomic number is increased.…

According to Bohr's theory $E_n=$ Total energy, $K_n=$ Kinetic energy, $V_n=$ Potential energy, $r_n=$ Radius of $n$th orbit

The 2s and the 2p orbital energies of hydrogen atom are $E_{2s}(\text{H})$ and $E_{2p}(\text{H})$, respectively. The 2s and the 2p orbital energies of lithium atom are $E_{2s}(\text{Li})$ and $E_{2p}(\text{Li})$,…

According to Bohr's model, the highest kinetic energy is associated with the electron in the