Part: 1: An explanation for Atomic number
- An element whose atomic number is equal to the number of protons in the nucleus or electrons in a neutral atom.
- It is denoted by (Z)
- Atomic number (Z) = no: of protons(p) =no: of electrons(e)
Part: 2: An explanation for Atomic weight
- The sum of protons and neutrons in the nucleus of an atom.
- It is denoted by (A)
- Atomic mass (A) = no: of proton(p) + no: of neutrons(An explanation
Part: 3: Explanation of Atomic symbol:
- A code to identify a specific element in the periodic table
The atomic symbol consists of three parts:
- The mass number is the sum of the number of neutrons and protons.
- Atomic number is the number of protons.
- The electrical charge represents the net gain(for anions) or loss (for cations)of electrons.