Chemical Bonding

Why has Hydrogen moved from Group 1 to the right side for Chemical Bonding?

• Because it's a metal

• Because it's a non-metal (gas)

• Because it's a non-metal (liquid)

• Because it's confused

Answer explanation

Yes, Hydrogen is a GAS, not a Group 1 Alkali metal.

Hydrogen is also one of 7 "diatomic" (2 atoms) elements.

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How many single bonds does Hydrogen have between the atoms?

• 0

• 1

• 2

• 3

Answer explanation

Yes, Hydrogen has 1 single covalent bond.

Each line represents 1 pair of shared Lewis Dots.

How many double bonds does Oxygen have between the atoms?

• 0

• 1

• 2

• 3

Answer explanation

Yes, Oxygen has 1 double covalent bond.

Each line represents 1 pair of shared Lewis Dots.

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How many triple bonds does Nitrogen have between the atoms?

• 0

• 1

• 2

• 3

Answer explanation

Yes, Nitrogen has 1 triple covalent bond.

Each line represents 1 pair of shared Lewis Dots.

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The type of chemical bond comprised of these elements

• Ionic (Mineral)

• Covalent (Molecular)

• Metallic

Answer explanation

That's right - you'll never see a metal in a molecule!

(Until you get to college and study lighter metal hydrides such as LiH & BeH₂. They have "significant covalent character".)

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What is the type of chemical bond comprised of these elements?

• Ionic (Minerals)

• Covalent (Molecules)

• Metallic

Answer explanation

Around 99% of the minerals in the Earth's crust are made up of eight elements including oxygen, silicon, aluminum, iron, calcium, sodium, potassium, and magnesium.

Common minerals include quartz, feldspar, bauxite, cobalt, talc, and pyrite.

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This element is a metal in Group ___.

• 6

• 3

• 13

• 16

Answer explanation

Yes, Group 13 helps us remember 3 dots. These represent the 3 valence "outside" electrons.

Tags

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This element is in Group ___.

• 3

• 6

• 13

• 16

Answer explanation

Yes, Group 16 helps us remember there are 6 Lewis Dots in these elements.

6 dots represent the outside "valence" electrons.

Tags

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What is the order from the 1st to the 2nd period?

• 1s² 2s² 2p⁶

• 1s² 2s² 2p⁶ 3s²

• 1s² 2s² 2p⁶ 3s² 3p⁶

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What is the order on the 4th period only?

• 4s² 4d¹⁰ 4p⁶

• 4s² 3d¹⁰ 4p⁶

• 3s² 3d¹⁰ 3p⁶

Answer explanation

Yes, great job! The 3d block interrupts the 4s & 4p blocks.

It's helpful to remember:

s starts with 1

p starts with 2

d starts with 3

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