Chemistry Workshop Presentation

Choose the correct formula for the polyatomic ion:

Nitrate

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• 
• 
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How many electron groups and lone pairs (if any) does a molecule with tetrahedral electron-group geometry, trigonal pyramidal molecular geometry, and a 109º bond angle have?

• 3 electron groups

  1 lone pair

• 2 electron groups, 0 lone pairs

• 4 electron groups, 1 lone pair

• 4 electron groups, 0 lone pairs

What type of bond is N-H?

Electronegativity of N: 3.0

Electronegativity of H: 2.1

• Ionic

• Nonpolar-Covalent

• Polar-Covalent

Put these elements in order of

smallest to largest electronegativity.

• Lithium

  Li

• Nitrogen

  N

• Fluorine

  F

• Boron

  B

How many electron groups and lone pairs (if any) does a molecule with linear electron-group geometry, linear molecular geometry, and a 180º bond angle have?

• 2 electron groups, 0 lone pairs

• 2 electron groups, 1 lone pair

• 4 electron groups, 0 lone pairs

• 3 electron groups, 1 lone pair

Put these elements in order of

smallest to largest atomic radius.

• Bismuth

  Bi

• Antimony

  Sb

• Nitrogen

  N

• Phosphorus

  P

Choose the correct formula for the polyatomic ion:

Hydrogen Phosphate

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• 
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Does NH3 have a net dipole?

If so, what direction is it pointing in?

• No

• Yes, pointing up

• Yes, pointing down

• Yes, pointing to the side

Does metallic energy increase or decrease across the periodic table, going left to right?

• Increase

• Decrease

To balance this chemical equation, what number goes in the blank?

• 1

• 2

• 3

• 4