Periodic TableAtomic Radius Trend6Choose the best answerThe correct decreasing order of atomic radii in Period 3 is:ACl > S > P > SiBSi > P > S > ClCP > Si > Cl > SDSi > S > P > Cl Like 0 Discuss 0Share
Periodic TableIonic Radius7Choose the best answerWhich statement correctly compares the sizes of Cl and Cl⁻?ACl⁻ is smaller because it gains an electron.BCl and Cl⁻ have the same radius.CCl⁻ is larger because electron–electron repulsion increases.DCl is larger because it is neutral. Like 0 Discuss 0Share
Periodic TableIsoelectronic Species and Ionic Radius8Choose the best answerAr, K⁺ and Ca²⁺ are isoelectronic. Their radii increase in the order:AAr < K⁺ < Ca²⁺BCa²⁺ < Ar < K⁺CCa²⁺ < K⁺ < ArDK⁺ < Ar < Ca²⁺ Like 0 Discuss 0Share
Periodic TableIonization Energy and Metallic Character9Choose the best answerWhich information cannot be concluded simply from a low ionization energy?AThe element is likely metallicBIt readily forms positive ionsCIt may form ionic bondsDIt belongs to the p-block Like 0 Discuss 0Share
Periodic TableIonization Energy Exceptions10Choose the best answerWhich pair correctly represents both exceptions in the first-ionization-energy trend of Period 2?ABe < B and N < OBBe OCBe > B and N > ODBe > B and N < O Like 0 Discuss 0Share