1002 - Practice while you wait: H H C H H C H H C H O H ER...

Info iconThis preview shows pages 1–6. Sign up to view the full content.

View Full Document Right Arrow Icon
H H H H C C C O H H H H ER = (4  ×  8) + (8  ×  2) = 48 VE = (3  ×  4) + (8  ×  1) + (6) = 26 SP =  1 / 2 (48 - 26) =  11 Practice while you wait: 22 valence electrons accounted for, 4 more to go! Look for the atoms without a filled octet. Works for VERY complicated molecules!
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Section 5.5 Bond Order For a bond  between the same two elements as the bond order  , the bond strength (energy)    and the bond length  . Bond gets shorter and stronger as BO  ! For the series: C - O C = O C O   bond length  bond energy and   bond order Shortest and  strongest!
Background image of page 2
Section 5.6 Lewis Structures for more Complicated Molecules Ex. CO 2 : (carbon dioxide)    1) Calculate SP ER = 3  ×  8 = 24 VE = 4 + (2  ×  6) = 16 SP = 1/2(24 - 16) = 1/2(8) = 4 2) Write down chemical symbols  (The first atom is usually the central atom.) 3) Draw in the shared pairs as bonds and then add the  rest of the valence electrons as lone pairs to  complete the octets. O C O = = Count valence e ’s and octet rule!
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Section 5.6 Lewis Structures for more Complicated Molecules Ex. CH 4 : (methane) Calculate SP ER = (1  ×  8) + (4  ×  2) = 16 VE = 4 + (4  ×  1) = 8 SP = 1/2(16 - 8) = 1/2(8) = 4 H H C H H 8 valence electrons accounted for. C has 8 e ’s and each H has 2 e ’s.
Background image of page 4
Section 5.6 Lewis Structures for more Complicated Molecules Ex. SeO 2 : (selenium dioxide) Calculate SP ER = (3  ×  8) + (0  ×  2) = 24 VE = 6 + (2  ×  6) = 18 SP = 1/2(24 - 18) = 1/2(6) = 3 O Se O 18 valence electrons accounted for!
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 6
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 22

1002 - Practice while you wait: H H C H H C H H C H O H ER...

This preview shows document pages 1 - 6. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online