Atomic Mass and Atomic Number
1. What is Atomic Mass and Atomic Number?
Atomic mass as we are getting from the name, is the total mass of an atom and is given by the total number of protons and neutrons we are not counting electrons because their mass is negligible.
Atomic number is equal to the number of protons or the number of electrons in any element. The position of an atom in the periodic table is determined by its atomic number.
2. What are Some Differences between Atomic Mass and Atomic Number?
The primary difference between them is that atomic number is the number the protons in an atom while mass number is the sum of protons and neutrons. That is why in the above table of an element’s mass and atomic number the mass number is more than the atomic number
3. Can two Elements share the Same Atomic Number?
No, each element possesses an individual atomic number, acting as a unique identifier. But in the case of isotopes, all the isotopes have a same number of electrons. Thus all isotopes have a same atomic number.
4. Can an Element Change its Atomic Number?
Yes, through nuclear processes like transmutation, elements can modify their atomic numbers, ultimately leading to the formation of new elements.
5. What are the First 20 Elements and their Atomic Mass?
|
Atomic Number |
Element name |
Atomic Mass |
|---|---|---|
|
1 |
Hydrogen |
1.008 |
|
2 |
Helium |
4.0026 |
|
3 |
Beryllium |
6.94 |
|
4 |
Boron |
9.0122 |
|
5 |
Carbon |
10.81 |
|
6 |
Nitrogen |
14.01 |
|
7 |
Oxygen |
16.00 |
|
8 |
Fluorine |
19.00 |
|
10 |
Neon |
20.18 |
|
11 |
Sodium |
22.99 |
|
12 |
Magnesium |
24.31 |
|
13 |
Aluminium |
26.98 |
|
14 |
Silicon |
28.09 |
|
15 |
Phosphorus |
30.97 |
|
16 |
Sulphur |
32.07 |
|
17 |
Chlorine |
35.45 |
|
18 |
Argon |
39.95 |
|
19 |
Potassium |
39.10 |
|
20 |
Calcium |
40.08 |
Atomic Mass and Atomic Number
Atomic Mass and Atomic Number are somewhat similar concepts in chemistry. Atomic Number tells us about the number of electrons or protons, whereas Atomic Mass tells us about the number of neutrons and protons combined. These two parameters are important in learning about atoms and their various properties. This article explores these two concepts briefly and discusses the key differences in detail.
Table of Content
- What is Atomic Number?
- Examples of Atomic Number
- What is Atomic Mass?
- Atomic Mass vs Atomic Number
- Elements Table with Atomic Mass and Atomic Number