Atomic number 8 belongs to Oxygen!
Oxygen is a gas element. atomic number of it is 8.
Atomic number = Number of protons
The atomic number is the number of protons in an atom of an element.
The element with atomic number eight is oxygen, and anyatom of oxygen is an isotope. Let's see how that works.The word isotope speaks to the number of neutrons in a given atom of a given element. When we speak of oxygen, we might consider any of its isotopes, but all atoms of this element have eight protons in their nucleus. They're all oxygen, and all have atomic number eight. Oxygen has three stable isotopes, and they are O-16, O-17 and O-18. All atoms of these isotopes have eight protons in them, but they have eight, nine and ten neutrons in their nuclei, respectively.
The atomic number of the element with the symbol Be (Beryllium) is 4.
Argon is a gas element. atomic number of it is 18.
Atomic number is the number of protons in the atomic nuclei of the atoms of an element.
The element with the highest atomic number is Oganesson, with the atomic number 118.
An element's atomic number is the # of protons in its nucleus.
The atomic number of an Element refers to it's position in The Periodic Table. The first element (Hydrogen - H) has the atomic number 1. The second element (Helium - He) has the atomic number 2. The fifty-second element (Tellurium - Te) has the atomic number 52. And so on.
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The atomic number tells you the number of protons in the nucleus of that element.