Documents

Structure and Bonding Ans

Description
chemistry
Categories
Published
of 251
All materials on our website are shared by users. If you have any questions about copyright issues, please report us to resolve them. We are always happy to assist you.
Related Documents
Share
Transcript
    1. Which of these equations represents the electron affinity of chlorine? A Cl 2 (g) + 2e  –   → 2Cl  –  (g) B Cl 2 (g) – 2e  –   → 2Cl  –  (g) C 21 Cl 2 (g) + e  –   → Cl  –  (g) D Cl(g) + e  – → Cl  –  (g) (Total 1 mark)  2. Which of these equations represents the second ionization of magnesium? A g + (g) →g 2+ (g) + e  –  B g(g)→g 2 + (g) + 2e  –  C g + (g) + e  –   → g 2 +(g) D g(g) + 2e  – → g 2 +(g) (Total 1 mark)  3. !he s etch graph #elo$ sho$s the trend in first ionization energies for some elements in %eriods t$o and three&'elect from the elements A to D  the one that 1  (a)has atoms $ith fie p electrons& ABCD (1)  (#)is a mem#er of *roup & ABCD (1)  (c)is li ely to #e ery unreactie& ABCD (1)  (d)normally forms four coalent #onds per atom& ABCD (1)(Total 4 marks) 2   4. Which of these ions has the greatest a#ility to polarize an anion? A ,a 2+ B Ca 2+ C Cs + D -  + (Total 1 mark)  5. Which of these electron density maps #est represents the #onding in the compound lithium iodide .i/? (Total 1 mark) 3  6. Which of these statements is incorrect ? A !he atomic radius of metals increases do$n a *roup& B !he trend in the melting temperature of successie elements across %eriod 2 is similar to that in %eriod & C 0 metallic structure is held together #y attractions #et$een metal atoms and delocalized electrons& D  a +  and  2–   ions are isoelectronic& (Total 1 mark)  7. Which of these statements a#out car#on3car#on dou#le #onds is false ? A !he t$o ends of a molecule cannot rotate relatie to each other a#out the a4is of the dou#le #ond& B !hey are t$ice as strong as a car#on3car#on single #ond& C !hey hae a higher electron density than a single #ond& D !hey consist of a sigma #ond and a pi #ond& (Total 1 mark) 4
Search
Tags
Related Search
We Need Your Support
Thank you for visiting our website and your interest in our free products and services. We are nonprofit website to share and download documents. To the running of this website, we need your help to support us.

Thanks to everyone for your continued support.

No, Thanks