Atomic StructureElectronic Transitions and Emission of Energy21Choose the best answerWhen an electron falls from a higher energy level to a lower energy level:AEnergy is emittedBEnergy is absorbedCAtomic number increasesDAtomic number decreases Like 0 Discuss 0Share
Atomic StructureIsoelectronic Species22Choose 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 Orbit23Choose 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 Particles24Choose 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 Numbers25Choose 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