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Quiz 8: Chemla Sprine 2012 - Ionization Energies and Lewis Structures, Quizzes of Chemistry

A quiz focusing on ionization energies and lewis structures. Students are required to write equations for electron affinity and ionization energy, explain variations in ionization energy across the periodic table, determine formal charge in lewis structures, and calculate bond energies. Suitable for university students studying chemistry, specifically in the context of atomic structure and bonding.

Typology: Quizzes

2011/2012

Uploaded on 05/31/2012

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37+ I
Quiz 8 Chemla Sprine 2012 Name
Each answer is worth 5 points, totaling 40 points.
1.) Consider the gas phase transfer of an electron from a sodium atom to a chlorine atom, written
below: Natrrt Clkt -+ Na*14 + Cl i*r . Write the two equations for electron affinity and ionization
energy that add to the equation written, and show that they add up correctly.
4.) Explain any variations to a smooth trend in ionization energy as you go across the periodic
N*o
I
7'{*
\)a+U + Nlo.* +At*
2.) How does the atomic radius change as you go across and down the periodic'table?
a^b + q&;^J!;
aa "L o #t lor"grt- -
3.) How does the first ionization energy tdange as you go across the periodic table?
tr {
5.) Draw the Lewis structure for NOz-.
5+t+ la = i6
( ,. r. I 1 '-
I tf
| -J * lt= Dr') l9 =
\-= \€e{ t"*{
13trffi
pf2

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37+ I

Quiz 8 Chemla^ Sprine^2012 Name

Each answer is worth^5 points, totaling 40 points.

1.) Consider the gas phase^ transfer of^ an^ electron^ from^ a^ sodium atom^ to^ a^ chlorine^ atom,^ written below: Natrrt Clkt -+^ Na14^ + Cl (^) ir. Write the two equations for^ electron affinity^ and ionization

energy that add to the^ equation^ written,^ and show that^ they^ add up^ correctly.

4.) Explain any variations to^ a^ smooth^ trend^ in ionization^ energy^ as^ you^ go across^ the^ periodic

N*oI

)a+U +^ Nlo.^ +At

2.) How does the atomic^ radius change^ as^ you^ go across^ and down^ the^ periodic'table?

a^b + q&;^J!;

aa "L

o

#t

lor"grt- -

3.) How does the first^ ionization^ energy^ tdange^ as^ you go^ across^ the^ periodic table?

tr {

5.) Draw the^ Lewis^ structure^ for^ NOz-.

5+t+ la^ =^ i

( ,. r.^ I^1 '-

I tf

-J *^ lt=

Dr')

l

-=

\€e{ t"*{

3trffi

7.) What is the formal char8: (^) ?n chlorine in ClOa- for the structure where chlorine has^ an octet?

,o-u-b:t

I (^) ^[

'-" \ ]^

r4r*z- **,k^J I 't^ .'oi^

J +^ e(^

bry?t^lnT

8.) Ito ,n. value of a cjH bond in C2H5 given^ the fol'tolwing informatio.n

t (^) The average C-C bond energy is 348 kJ/mol. (^) ),

lff:T:ffI:.H:enersv*ii'=111"J,i,r,u, ,:^ \

3 Hrr.,^ r^ Qcqt^

€ (^) Oilr,,

':" n(^i-rtur\

-'-: i

{))Jt

|D(H_ft) +^ e(o)^ I {Dri^

-b) +6(l(c-f^ : tst 8

shbb)Qr-Wz\y +L(c-HI^ -^ -nr

\3os 3q7^ 5ftn)^ =^ -1rrt

l

D[d-H) '^

4ts K4*'t t

*\

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