Chemistry - Electron Configuration for Atoms

What is the significance of the big numbers in front of the small letters in electron configurations?

• They represent the atomic number.

• They indicate the energy level of the electron.

• They show the number of protons.

• They are used to balance chemical equations.

Which orbitals are represented by the letters S, P, D, and F?

• They are different types of atomic nuclei.

• They are different types of molecules.

• They are different types of chemical bonds.

• They are different types of electron orbitals.

What does the exponent in an electron configuration represent?

• The atomic mass of the element.

• The number of neutrons in the nucleus.

• The number of electrons in that orbital.

• The number of protons in the nucleus.

How many electrons can the P orbital hold?

• 2

• 10

• 14

• 6

What is the electron configuration for helium?

• 2P2

• 1S1

• 2S1

• 1S2

Why is it important to include all previous terms when writing electron configurations?

• To make the configuration look longer.

• To ensure the total number of electrons is correct.

• To confuse the reader.

• To match the atomic mass.

What is the electron configuration for oxygen?

• 2S22P4

• 1S22S22P4

• 1S22S2

• 1S22P4

Which element's electron configuration ends in 3D6?

• Magnesium

• Iron

• Oxygen

• Helium

What is the electron configuration for tellurium?

• 1S22S22P63S23P64S23D104P65S24D105P4

• 1S22S22P63S23P64S23D104P65S24D105P6

• 1S22S22P63S23P64S23D104P65S24D105P2

• 1S22S22P63S23P64S23D104P65S24D105P5

Why is the D orbital's energy level always one less than the row it is in?

• Because it is a different type of orbital.

• Because it has fewer electrons.

• Because it is a lower energy orbital.

• Because it is a higher energy orbital.