What is atomic number and what relationships does it have to the periodic table?

Answer 1

Atomic number is the number of protons in the nucleus of an atom. All of the atoms of the same element have the same number of protons, and therefore the same atomic number. For example, all hydrogen atoms have one proton in their nuclei, and hydrogen's atomic number is 1; and all carbon atoms have six protons in their nuclei, and carbon's atomic number is 6. Each element's identity is determined by its atomic number. The relationship between the Periodic Table and atomic number is that the elements are arranged in the periodic table according to increasing atomic number, starting with hydrogen and ending with Ununoctium, which has an atomic number of 118.

Answer 2

The atomic number is the number of protons in an atom's nucleus. It determines the element's identity on the periodic table because each element has a unique number of protons. Elements are arranged on the periodic table in order of increasing atomic number.

Answer 3

Atomic number is the number or protons in the nucleus of the element. The periodic table is arranged from elements with small atomic number to those with large atomic number.

Answer 4

The atomic number is the number of protons that an atom has. That's the sequence for the periodic table.

Answer 5

The atomic number of an element is the number of protons (or electrons) in an element. Elements in the periodic table are arranged according to their atomic numbers.