Chemistry / Chemie - 124
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| For which of the molecules shown below is the molecular geometry (shape) the same as the VSEPR electron domain geometry? | Vir watter van die onderstaande molekules is die molekulêre (of ruimtelike) vorm dieselfde as die VSEPA (VSEPR)-elektrondomein geometrie? |
| Which of the following molecules are linear? | Watter van die onderstaande molekules is lineêr? |
| Which of the following molecules are polar? | Watter van die onderstaande molekules is polêr? |
| In which of the following molecules does the central atom utilize TWO d-orbitals to form hybrid orbitals? | In watter van die volgende molekules gebruik die sentrale atoom TWEE d-orbitale by die vorming van hibriedorbitale? |
| Complete the Lewis structure shown below and answer the questions that follow. | Voltooi die Lewis struktuur hieronder getoon en antwoord die vrae wat volg. |
(a) What is the approximate C-C(2)-C bond angle? | (a) Wat is die beraamde C-C(2)-C bindingshoek? |
(b) What is the hybridisation of C(1)? | (b) Wat is die hibridisasie van C(1)? |
| (c) How many unhybridised p-orbitals does C(2) have? | (c) Hoeveel onhibridiseerde p-orbitale het C(2)? |
(c) How many σ–bonds are there in the molecule? | (c) Hoeveel σ-bindings is daar in die molekuul? |
(d) How many π–bonds are there in the molecule? | (d) Hoeveel π-bindings is daar in die molekuul? |
| How many lone pairs of electrons are drawn in each resonance form of NO2-? | Hoeveel alleenpare van elektrone word geteken in elke resonansievorm vir NO2-? |
| Consider the following ionization energies (kJ/mol) for an element in the fourth period of the periodic table. | Oorweeg die volgende ionisasie energieë (kJ/mol) vir 'n element in die vierde periode van die periodieke tabel. |
| IE1 | IE2 | IE3 | IE4 | IE5 | IE6 | IE7 | IE8 |
| 899 | 1655 | 2640 | 4010 | 5533 | 11010 | 17800 | 22530 |
| a) What is the identity of the element? Give it's element symbol. | a) Wat is die identiteit van die element? Gee sy element simbool. |
| Which of the following is expected to have the smallest radius? | Watter van die volgende word verwag om die kleinste radius te hê? |
What is the noble gas configuration of Y? (Add a space after each subshell e.g. [He] 2s2 2p2) | Wat is die edelgas konfigurasie van Y? (Voeg spasies na elke sub-skil e.g. [He] 2s2 2p2) |
| Which of the following atoms is/are diamagnetic in its ground state? | Watter van die volgende atome is diamagneties in sy grondtoestand? |
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