This video tutorial explains how to draw Bohr models for atoms, using magnesium as an example. It covers the steps to draw the nucleus, find the number of protons and neutrons, determine the number of electrons, and draw the electron shells. The tutorial also explains how to verify the valence electrons using the periodic table, ensuring the Bohr model is accurate.

What is the first step in drawing a Bohr model?

• Drawing the electron shells

• Calculating the neutrons

• Drawing the nucleus

• Finding the protons

How do you determine the number of protons in an atom?

• By looking at the atomic mass

• By subtracting the atomic number from the atomic mass

• By looking at the atomic number

• By counting the electrons

What is the formula to find the number of neutrons in an atom?

• Atomic mass + Number of electrons

• Atomic number + Atomic mass

• Atomic mass - Atomic number

• Atomic number - Atomic mass

After calculating, how many protons and neutrons are in the nucleus of a magnesium atom?

• 14 protons and 12 neutrons

• 12 protons and 10 neutrons

• 10 protons and 12 neutrons

• 12 protons and 12 neutrons

How many electrons does a magnesium atom have?

• 12

• 14

• 10

• 16

Tags

NGSS.MS-PS1-1

What is the maximum number of electrons that the K shell can hold?

• 8

• 2

• 4

• 6

How many electrons can the L shell hold?

• 8

• 6

• 4

• 2

What is the name of the third energy shell in a Bohr model?

• K shell

• L shell

• M shell

• N shell

How many valence electrons does magnesium have?

• 3

• 2

• 4

• 1

Which group in the periodic table does magnesium belong to?

• Group 3

• Group 4

• Group 1

• Group 2