NEET UG Structure of Atom — practice questions
43 free MCQs with worked solutions. Tap any question for the answer + explanation, or practice them all in the app.
Practice NEET UG Structure of Atom in the app →The energy of the electron in the $n = 2$ orbit of hydrogen by Bohr's model is:A 3p orbital is specified by:The shape of a p-orbital is best described as:The electronic configuration of nitrogen ($Z = 7$) in the ground state is:Isotopes have the SAME number of:The energy of the nth orbit in a hydrogen atom (Bohr's model) is:The BALMER series of hydrogen corresponds to electron transitions ending at:The de Broglie wavelength of a particle with momentum p is:Heisenberg's uncertainty principle is most accurately stated as:Hund's rule states that electrons in degenerate orbitals:By the AUFBAU principle, the 3d subshell starts filling:The electronic configuration of Cr (Z=24) is an exception, written as:In the photoelectric effect, the kinetic energy of ejected electrons is:In Rutherford's α-particle scattering experiment, the principal conclusion was that:The wavelength λ associated with a particle of momentum p (de Broglie hypothesis) is:According to Bohr's model, the radius of the n-th orbit in a hydrogen atom is proportional to:The energy of the n-th orbit in a hydrogen atom (Bohr) varies as:When an electron in a hydrogen atom transitions from n = 3 to n = 2, the emitted photon belongs to the:The four quantum numbers (n, ℓ, m_ℓ, m_s) for the last electron of sodium (Z = 11) in its ground state are:Pauli's exclusion principle states that:Hund's rule of maximum multiplicity says that in a set of degenerate orbitals:The maximum number of electrons that can occupy the 4th principal shell (n = 4) is:The shape of a 2p orbital is:The Heisenberg uncertainty principle states that the product Δx · Δp is at least of the order of:The ground-state electronic configuration of Cu (Z = 29) is:An electron in a hydrogen atom falls from n = 4 to n = 2. The wavelength of the emitted photon (R_H = 1.097 × The number of radial nodes in a 3s orbital is:Isotopes of an element differ in:The atomic number Z of an element is defined asThe Rutherford α-particle scattering experiment led to the conclusion thatBohr's model of the hydrogen atom postulates that the angular momentum of an electron in an allowed orbit isThe radius of the nth Bohr orbit of hydrogen is proportional toThe energy of the electron in the nth Bohr orbit of hydrogen isThe maximum wavelength in the Lyman series of the hydrogen spectrum (transition n₂ → 1) corresponds to n₂ =Which series of the hydrogen spectrum lies in the visible region?The relationship E = hν (Planck) between photon energy and frequency contains constant h that is approximatelyFor a hydrogen-like ion of atomic number Z, the energy of the nth level isThe de Broglie wavelength associated with a particle of mass m and velocity v isHeisenberg's uncertainty principle statesThe four quantum numbers (n, l, m_l, m_s) fully specify an electron in an atom. The magnetic quantum number m_The Aufbau principle states that electrons fill atomic orbitalsHund's rule states that for degenerate orbitals of a subshell, electronsAn electron and a proton have the same kinetic energy. Which has the larger de Broglie wavelength?