Atomic Number and Element Identification

The video tutorial explains how to determine the element with four protons using the periodic table. It highlights that the atomic number, which is a whole number above the element symbol, equals the number of protons. The tutorial identifies beryllium as the element with four protons, using its atomic number, which is sometimes referred to as the proton number. Dr. B concludes by reiterating that to find the number of protons in any element, one should look at the atomic number.

What does the atomic number of an element represent?

• The number of electrons

• The number of protons

• The atomic mass

• The number of neutrons

Which element has an atomic number of four?

• Boron

• Carbon

• Beryllium

• Lithium

What is the symbol for the element with four protons?

• B

• C

• Be

• Li

What is another name for the atomic number?

• Mass number

• Electron number

• Neutron number

• Proton number

How can you determine the number of protons in an element using the periodic table?

• By looking at the atomic mass

• By checking the atomic number

• By counting the electrons

• By finding the element's position