oxygen
| atomic number: | 8 | atomic radius: |
|---|---|---|
| atomic symbol : td> | O | Melting Point: |
| Atomic Weight: | 16.00 | Boiling Point: |
| Electron configuration: | [He]2s 2 2p 4 | Oxidation states: |
Why is oxygen atomic number 8?
In the periodic table of elements, oxygen is represented by the symbol O. It has an atomic number of 8 because it has 8 protons in its nucleus.
What are the first 8 elements of the periodic table?
List of elements of the periodic table
- Element 1: HHydrogen. Element 2: HeHelium. …
- Element 4: Babyryllium. Element 5: boron. …
- Element 7: N nitrogen . Element 8: O Oxygen. …
- Item 10: NeNeon. Element 11: NaSodium. …
- Item 13: AlAluminium. …
- Element 16: Sulfur. …
- Element 19: Potassium. …
- Item 22: Titanium.
Why is the number 8 important to the element?
D. Oxygen, element symbol O, is the element with atomic number 8 on the periodic table. This means that each oxygen atom has 8 protons. Changing the number of electrons creates ions, while changing the number of neutrons creates different isotopes of the element, but the number of protons remains constant.
Which element has the atomic mass 8?
< td> nitrogen
tr>
| atomic mass | chemical element name | number |
|---|---|---|
| 14.0067 | 7 | |
| 15.9994 | oxygen | 8 |
| 18.9984 | Fluorine | 9 |
| 20.1797 | Neon | 10 |
What is period 1 called?
1 (alkali metals)
What is an element that begins with E?
Periodic table with element names and electronegativity
< td> einsteinium < /td> < td>Fermium| element name | symbol | atomic number |
|---|---|---|
| It | 99 | |
| Erbium | He | 68 |
| Europium | Eu | 63 |
| Fm | 100 |