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What principle quantum number defines the shape of an orbital

• Azimuthal quantum number
• Principal quantum number
• Spin quantum number
• Magnetic quantum number

Which of the following is showing evidence that the universe is expanding?

• CMB

• Red shift

• Hydrogen

• Sound

What is the chemical formula of Gold (III) nitride?

Chemical name of NiPO₃

• Nickel (II) Phosphide

• Nickel (III) Phosphide

• Nickel (III) Phosphate

• Nickel (III) Phosphite

Who determined that atoms could be divided

• Dalton

• Democritus

• Rutherford

• Thomson

Tin (IV) hydroxide

• SnHO₄

• Sn(HO)₄

• SnOH₄

• Sn(OH)₄

How many electrons are present if it has 53 protons, mass number 127 with a -1 charge?

• 53

• 54

• 74

• 180

Type of bonding between metal and non-metal

• Covalent

• Giant molecular

• Ionic

• Metallic

Electronegativity difference of NH₃ (N = 3.0, H = 2.1)

• -0.9

• 0.9

• -3.3

• 3.3

Type of force responsible for holding molecules together in a substance

• Intramolecular force

• Ionic force

• Covalent force

• Intermolecular force