What are the atomic masses of all the elements? The Elements, sorted by Atomic Mass Atomic Number Symbol Atomic Weight (amu, g/mol) 11 Na 22.98977 12 Mg 24.305 13 Al 26.98154 14 Si 28.0855 What
What are the atomic masses of all the elements?
The Elements, sorted by Atomic Mass
| Atomic Number | Symbol | Atomic Weight (amu, g/mol) |
|---|---|---|
| 11 | Na | 22.98977 |
| 12 | Mg | 24.305 |
| 13 | Al | 26.98154 |
| 14 | Si | 28.0855 |
What are the atomic mass of first 20 elements?
Atomic Number of Elements from 1 to 30
| Atomic Number | Element | Atomic Mass |
|---|---|---|
| 18 | Argon | 39.948 |
| 19 | Potassium | 39.098 |
| 20 | Calcium | 40.078 |
| 21 | Scandium | 44.956 |
What are the 20 most common elements?
Terms in this set (20)
- Hydrogen. H.
- Helium. He.
- Lithium. Li.
- Carbon. C.
- Nitrogen. N.
- Oxygen. O.
- Sodium. Na.
- Magnesium. Mg.
What is the Valency of 1 to 30 elements?
Valency of First 30 Elements
| Element | Atomic Number | Valency |
|---|---|---|
| Valency of Hydrogen | 1 | 1 |
| Valency of Helium | 2 | 0 |
| Valency of Lithium | 3 | 1 |
| Valency of Beryllium | 4 | 2 |
What are the 30 elements name?
What are the 30 Elements
| Name of the Element | Symbol |
|---|---|
| Boron | B |
| Carbon | C |
| Nitrogen | N |
| Oxygen | O |
What is the symbol of 1 to 30 elements?
List of elements by symbol
| Atomic Number | Name | Symbol |
|---|---|---|
| 27 | Cobalt | Co |
| 28 | Nickel | Ni |
| 29 | Copper | Cu |
| 30 | Zinc | Zn |
How are the elements arranged by atomic mass?
The periodic table of elements arranges all of the known chemical elements in an informative array. Elements are arranged from left to right and top to bottom in order of increasing atomic number. Order generally coincides with increasing atomic mass. The rows are called periods.
How do you find the atomic mass of an element?
The easiest way to find the atomic mass is to look it up on a periodic table. The atomic mass for each element is given in atomic mass units or grams per mole of atoms. This value is the average atomic mass of the element.
What does the atomic mass tell you about an element?
Atomic mass of an element tells us the number of times an atom of the element is heavier than of the mass of an atom of carbon-12. A unit suitable for the mass of atoms and the mass of subatomic particles is the atomic mass unit (u).
What element has the greatest atomic mass?
Ununoctium is the heaviest element, but it is man-made. The heaviest naturally-occurring element is uranium (atomic number 92, atomic weight 238.0289).