Agniveer Navy class9_atom_structure — practice questions
11 free MCQs with worked solutions. Tap any question for the answer + explanation, or practice them all in the app.
Practice Agniveer Navy class9_atom_structure in the app →The maximum number of electrons that can be accommodated in the $n$-th shell of an atom is:Energy of the photon emitted in a hydrogen transition from n=4 to n=2:In vacuum, the velocity of electromagnetic radiation isIn a photoelectric experiment, doubling the *intensity* of incident light (frequency unchanged) willFor a hydrogen-like atom of nuclear charge $Z$, the radius of the $n$th Bohr orbit scales asPer NCERT, the charge-to-mass ratio e/m_e of the electron, measured by J.J. Thomson in 1897, is which value?Per NCERT Table 2.1, which fundamental particle has approximate mass 1.674927 × 10⁻²⁷ kg and zero charge?Per NCERT, the smallest and lightest positive ion (a proton) was obtained from which gas in modified cathode-rPer NCERT Table 2.3, the LYMAN series (n₁ = 1) of hydrogen lines lies in which spectral region?Per NCERT, the electron-spin quantum number m_s — introduced by Uhlenbeck and Goudsmit (1925) — takes which vaA 3p orbital is specified by: