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If you removed all empty space from atoms in your body, you'd compress to the size of a speck of dust.
Which one is the wrong statement?
medium
Structure of Atom
2017
chemistry
The uncertainty principle is ΔE×Δt≥4πh
Half-filled and fully filled orbitals have greater stability due to greater exchange energy, greater symmetry, and more balanced arrangement.
The energy of 2s orbitals is less than the energy of 2p orbitals in the case of hydrogen-like atoms.
de-Broglie’s wavelength is given by λ=mvh, where m is the mass of the particle, v is the group velocity of the particle.
Explanation
To determine which statement is incorrect, let's analyze each option:Option 1:The uncertainty principle is ΔE×Δt≥4πh.
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Sign up / Login This is a correct statement. The energy-time uncertainty principle states that the product of the uncertainty in energy
and the uncertainty in time
is greater than or equal to
4πh. Option 2:
Half-filled and fully filled orbitals have greater stability due to greater exchange energy,
greater symmetry, and more balanced arrangement.
This is also a correct statement. Half-filled and fully filled orbitals are more stable due to exchange energy and symmetry.
Option 3:
The energy of 2s orbitals is less than the energy of 2p orbitals in the case of hydrogen-like atoms.
This statement is incorrect. In hydrogen-like atoms, the energy of an orbital depends only on the principal quantum number
For the same
all orbitals have the same energy. Therefore, 2s and 2p orbitals have the same energy in hydrogen-like atoms.
Option 4:
de-Broglie’s wavelength is given by
λ=mvh, where
is the mass of the particle,
is the group velocity of the particle.
This is a correct statement. The de-Broglie wavelength formula relates the wavelength
of a particle to its momentum
Therefore, the incorrect statement is Option 3.