Electron Configuration and Bohr Model Quiz

What did Neils Bohr describe about the atom in 1913?

• Atoms have electrons that move randomly around the nucleus.

• Atoms are indivisible particles.

• Atoms consist of a nucleus surrounded by electrons in circular orbits.

• Atoms are made up of protons, neutrons, and electrons.

According to the Bohr model, how many electrons can the first shell hold?

• Two electrons

• Eight electrons

• Ten electrons

• Four electrons

What is the formula to calculate the maximum number of electrons a shell can accommodate?

• 2n

• n^3

• 2n^2

• n^2

What is the electron configuration for phosphorus?

• 2.8.5

• 2.8.8.2

• 1

• 2.3

How many energy levels are needed for calcium's electron configuration?

• Three energy levels

• Five energy levels

• Two energy levels

• Four energy levels