1Which Group 2 oxide forms the most alkaline solution in water?aBeryllium oxidebMagnesium oxidecCalcium oxidedStrontium oxideShow answer
2Which Group 2 element does not react with water or steam?aBeryllium (Be)bMagnesium (Mg)cCalcium (Ca)dAll Group 2 metals reactShow answer
3What are the products when magnesium reacts with steam?aMg(OH)₂ and H₂bMgO and H₂cMg(OH)₂ onlydMgO and H₂OShow answer
4The species formed when a Group 2 basic oxide (e.g., CaO) reacts with water:aA salt and hydrogenbA metal hydroxidecA metal carbonatedA salt and waterShow answer
6What are the products of heating a Group 2 nitrate (e.g., Ca(NO₃)₂)?aMetal oxide, CO₂, O₂bMetal oxide, NO₂, O₂cMetal hydroxide, N₂, O₂dMetal, NO₂, H₂OShow answer
7The reason for the increasing thermal stability of Group 2 nitrates down the group is:aSmaller cations, higher polarizing powerbLarger cations, lower polarizing powercLarger size of the nitrate ion (NO₃⁻)dDecrease in the charge on the cationShow answer
10Why does Be²⁺ form complexes more easily than Ba²⁺?aLarger sizebLower charge densitycHigher charge densitydMore d-orbitalsShow answer
13What is the trend in melting point of Group 2 elements down the group?aIncreasesbDecreasescRemains constantdFirst increases then decreasesShow answer
15The reactivity of Group 2 elements increases down the group due to:aIncrease in ionization energybDecrease in atomic sizecIncrease in shielding effectdIncrease in nuclear chargeShow answer
16What is the correct order of reactivity for Group 2 elements?aBa < Sr < Ca < Mg < BebBe < Mg < Ca < Sr < BacMg < Be < Ca < Ba < SrdCa < Mg < Be < Sr < BaShow answer
17Which Group 2 element is used in aerospace materials to make copper alloys harder?aMgbCacBedBaShow answer
20The standard electrode potential of which Group 2 element is least negative?aBabSrcCadBeShow answer
