Lewis Diagrams Flashcards

1
Q

ROT for C atoms

A

Always form 4 covalent bonds

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2
Q

ROT for O atoms

A

Always form 2 covalent bonds

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3
Q

ROT for N atoms

A

Always form 3 covalent bonds

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4
Q

Rest of atoms?

A

Always form single covalent bonds

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5
Q

1st step for drawing Lewis diagrams

A

Count the number of valence electrons available for bonding

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6
Q

2nd step for drawing Lewis diagrams

A

Bond the central atom to the neighboring atom with a pair of electrons

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7
Q

3rd step for drawing Lewis diagrams

A

Add pairs of electrons to neighboring atoms to fulfill the octet rule

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8
Q

4th step for drawing Lewis diagrams

A

Place any remaining electrons on central atoms

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9
Q

5th step for drawing Lewis diagrams

A

Shift non-bonded pairs to bond sites to attain octet rule

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10
Q

What is the Octet Rule?

A

Atoms want to have 8 electrons in their valence shell to be stable. There should be 8 electrons around each atom. The exception is hydrogen which only needs 2 atoms.

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11
Q

What is a Lewis diagram of CO2?

A

C=4 ::O=C=O::
O=6x2
=16 electrons

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