Atomic StructureIsoelectronic Species21Choose the best answerWhich among the following are isoelectronic species?ANa⁺, K⁺, Ca²⁺, Mg²⁺BCa²⁺, Mg²⁺, S²⁻, K⁺CCa²⁺, Ar, S²⁻, K⁺DNone of the above Like 0 Discuss 0Share
Atomic StructureEnergy of Electron in Bohr Orbit22Choose the best answerAccording to Bohr's model, the energy of an electron in the nth orbit of hydrogen is:AEₙ = −13.6/n⁴ eVBEₙ = −13.6/n³ eVCEₙ = −13.6/n² eVDEₙ = −13.6/n eV Like 0 Discuss 0Share
Atomic StructureSubatomic Particles23Choose the best answerThe number of types of nucleons present in an atomic nucleus is:AMore than 100B3C2D100 Like 0 Discuss 0Share
Sindh MDCAT 2022 Chemistry#Atomic Structure#Quantum Numbers24Choose the best answerWhich orbitals are allowed in the M-shell? (Sindh MDCAT 2022)As onlyBs, p, d and fCs and p onlyDs, p and d Like 0 Discuss 0Share
Atomic StructureHund's Rule25Choose the best answerThe ground-state arrangement that maximizes total electron spin in degenerate orbitals is governed by:AHeisenberg uncertainty principleBHund's ruleCAufbau principleDPauli exclusion principle Like 0 Discuss 0Share