Periodic TableSuccessive Ionization Energies46Choose the best answerFor successive ionizations of the same atom, the ionization-energy requirement generally follows:AM⁺ > M²⁺ > M³⁺BM²⁺ > M³⁺ > M⁺CM³⁺ > M²⁺ > M⁺DM²⁺ > M⁺ > M³⁺ Like 0 Discuss 0Share
Periodic TableSuccessive Ionization Energies47Choose the best answerWhy is the second ionization energy of Mg greater than its first ionization energy?ANuclear charge increases after first ionization.BIonic radius increases.CThe remaining electrons experience stronger nuclear attraction.DThe number of protons decreases. Like 0 Discuss 0Share
Periodic TableIonization Energy Exceptions48Choose the best answerBoron has a lower first ionization energy than beryllium because:AA 2p-electron is removed more easily than an electron from a filled 2s-subshell.BAn s-electron is always removed more easily than a p-electron.CIonization energy always decreases with atomic number.DBoron has a completely filled p-subshell. Like 0 Discuss 0Share
Periodic TableAtomic Radius Trend49Choose the best answerAcross a period, atomic radius generally:AIncreasesBRemains unchangedCDecreasesDFirst increases and then always doubles Like 0 Discuss 0Share
Periodic TableAtomic Radius Trend50Choose the best answerGallium has a slightly smaller atomic radius than aluminium mainly because of:AGreater shielding by 4p-electronsBPoor shielding by intervening 3d-electronsCSmaller nuclear charge of galliumDAbsence of d-electrons in gallium Like 0 Discuss 0Share