The statement that is $NOT$ correct is:

  • A
    Energies of stationary states in hydrogen-like atoms are inversely proportional to the square of the principal quantum number.
  • B
    The radius of the first orbit of $He^{+}$ is half that of the first orbit of the hydrogen atom.
  • C
    Angular quantum number signifies the shape of the orbital.
  • D
    Total number of nodes for $3s$ orbital is three.

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Similar Questions

Which of the following graphs represents one node?

Given below are two statements:
Statement $I$: Rutherford's gold foil experiment cannot explain the line spectrum of hydrogen atom.
Statement $II$: Bohr's model of hydrogen atom contradicts Heisenberg's uncertainty principle.
In the light of the above statements,choose the most appropriate answer from the options given below:

Match the items in List-$I$ with the items in List-$II$.
List-$I$ List-$II$
$A$. Nodes $I$. Three dimensional shape of the orbital
$B$. Subsidiary quantum number $II$. Significant only for motion of microscopic objects
$C$. White light $III$. $|\psi|^2$ is zero
$D$. Heisenberg uncertainty principle $IV$. Spin state of electron
$V$. Continuous spectrum

If the wavelength for an electron emitted from $H$ atom is $3.3 \times 10^{-10} \ m$,then energy absorbed by the electron in its ground state compared to minimum energy required for its escape from the atom,is $.......$ times. (Nearest integer).
[Given $: h = 6.626 \times 10^{-34} \ Js$,Mass of electron $= 9.1 \times 10^{-31} \ kg$ ]

Select the correct statements from the following:
$A$. Atoms of all elements are composed of two fundamental particles.
$B$. The mass of the electron is $9.10939 \times 10^{-31} \ kg$.
$C$. All the isotopes of a given element show same chemical properties.
$D$. Protons and electrons are collectively known as nucleons.
$E$. Dalton's atomic theory regarded the atom as an ultimate particle of matter.
Choose the correct answer from the options given below:

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