Atomic Number (Z)=Number of Protons. Example: Hydrogen: The simplest atom, hydrogen, has 1 proton in its nucleus. Therefore, the atomic number of hydrogen is 1. Carbon: Carbon atoms have 6 protons ...

This video is an interactive lesson in calculating an atom’s mass and atomic number. Atoms consist of a nucleus containing protons and neutrons, surrounded by electrons in shells. The numbers of ...

Atomic mass is defined as the number of protons and neutrons in an atom, where each proton and neutron has a mass of approximately 1 amu (1.0073 and 1.0087, respectively).

Let's try an example: We can choose selenium, which has an atomic number of 34, meaning there are 34 total electrons in a neutral atom of selenium. This non-metal resides in Period 4, Group 6A.

You would look at the periodic table to find an atom that you could add 5 to its number of protons that would give you a sum close to the atomic mass given for that element. The answer is beryllium ...

The number of protons in an atom of any given element is always the same. Physicists call this the atomic number.So, in the above example of lead, its atomic number is 82 and that does not change ...

Atomic Number: The atomic number of an atom is determined by the number of protons it has. It uniquely identifies each element on the periodic table. For example, Oxygen has an atomic number of 8 ...