8/10/2019 chapter10-PEX

1/4

CHAPTER 10- Chemical bondings II:

Molecular Geometr and Hbridi!ation o" Atomic #rbitals $R% PAH&A'A(

1. Using VSEPR model, predict the molecular geometry (molecular shape) and electron

geometry of the followings!" #!"

$% l$% '" Sn#l"

%

$. Predict the approimate *alue for the +ond angles for each car+on indicated in thefollowing compounds

(a) % # % # # % (+) % # % ! %

". Predict whether the following molecules are polar or nonpolar- #l #l #l S!$ '" #S$

# # # # #l

/. &ndicate the hy+ridi0ation of or+itals +y the central atom in each of the following-

S!"$% S!" '/

S#l$

2. #onsider the following molecules , answer the following 3uestions for only mar4ed

(5)car+ons.

#l

(a) ! #5 (+) % #5% #5 # % #5'#l

&) predict the +ond angles &&) gi*e hy+ridi0ations

&&&) determine the total num+er of sigma () and pi () electrons in the molecules.

V&) predict the molecular geometry ( molecular shape) and electron geometry aroundeach mar4ed car+on.

6. 7raw 8ewis dot structures for following molecules and ions, predict which will ehi+its

delocali0ed pi () +onding ( resonance structure).

S!"$% '/

'!$ '#S% !#'% &"

%

1

8/10/2019 chapter10-PEX

2/4

9. #onsider the following molecules and ions

e$% #$

$% !$$ #'% '$

%

a) write molecular or+ital electron configuration

+) predict the +ond order

c) predict the sta+ility (sta+le or unsta+le)

:. #onsider #", #", and #"

%, for each

a) draw 8ewis dot structure

+) predict electron geometry and molecular geometry

c) using hy+rid or+itals , descri+e the +onding ( or+ital hy+ridi0ation)

d) predict the +ond angles

e) predict the polarity ( polar or non%polar)

;. #onsider $, $, $

%- for each,

a) draw energy%le*el diagram.

+) determine total num+er of electrons.

c) write 8ewis dot structure.

d) calculate the +ond order.

e) determine the magnetic properties(in terms of paramagnetic or diamagnetic).

f) #ompare the sta+ility and arrange the in order of increasing sta+ility.

1

8/10/2019 chapter10-PEX

3/4

8/10/2019 chapter10-PEX

4/4

6. 7raw 8ewis dot structures for following molecules and ions, predict which will ehi+itsdelocali0ed pi () +onding ( resonance structure).

S!"$% 'o '/

'o '!$ Bes '#S% Bes !#'% Bes &"

% 'o

9. #onsider the following molecules and ions

a) write molecular or+ital electron configuration +) predict the +ond order

c) predict the sta+ility (sta+le or unsta+le) e$

% 7oes not apply

#$$% C$1sC5

$1sC

$$sC5

$$sD

$$pD

$$pyC

$$p0, .! ", sta+le

!$$ C$1sC5

$1sC

$$sC5

$$sC

$$p0D

$$pD

$$py, .! ", sta+le

#'% C$1sC5$1sC

$$sC5

$$sD

$$pD

$$pyC

$$p0, .!. ", sta+le

'$% C$1sC5

$1sC

$$sC5

$$sD

$$pD

$$pyC

$$p0D5

1$p, .!. $.2, sta+le

:. #onsider #", #", and #"

%, for each

a) draw 8ewis dot structure +) predict electron geometry and molecular geometry

c) using hy+rid or+itals , descri+e the +onding ( or+ital hy+ridi0ation)d) predict the +ond angles

e) predict the polarity ( polar or non%polar)

;. #onsider for each $ $

$%

a) draw energy%le*el diagram.

+) determine total num+er of electrons. c) write 8ewis dot structure. d) calculate the +ond order.

e) determine the magnetic properties(in terms of paramagnetic or diamagnetic). f) #ompare the sta+ility and arrange the in order of increasing sta+ility.

1