Why is the relative mass of chlorine-35.5 and not a whole number?
Table of Contents
- 1 Why is the relative mass of chlorine-35.5 and not a whole number?
- 2 Why is atomic mass of chlorine taken as 35.5 μ and not a whole number like 35 μ or 36 μ explain?
- 3 What is the atomic mass of chlorine 35?
- 4 What is the atomic mass of chlorine-35?
- 5 Why is chlorine-35 more abundant?
- 6 Is the mass of 35\% of chlorine the same as 37?
- 7 What is the number of neutrons in chlorine 35?
Why is the relative mass of chlorine-35.5 and not a whole number?
For example, the relative atomic mass of chlorine is 35.5 rather than a whole number. This is because chlorine contains two different isotopes, chlorine-35 and chlorine-37. The table shows the mass numbers and abundances of the isotopes of copper in a naturally-occurring sample.
Why is atomic mass of chlorine taken as 35.5 μ and not a whole number like 35 μ or 36 μ explain?
Answer: The reason for the atomic mass of chlorine taken as 35.5u and not as 35u because of the presence of isotopes. Isotopes are defined as variants of a particular element where these variants will have the same number of protons but differ in the number of neutrons in the atom.
Why is the relative atomic mass of an element not a whole number?
The relative atomic mass of an element is a weighted average of the masses of the atoms of the isotopes. It takes account of the abundance of each of the isotopes of the element. mass numbers are always whole numbers (protons or neutrons cannot be split into parts)
Why the atomic mass number for chlorine shown on the periodic table is closer to 35 than 37?
The calculated average atomic mass is closer to 35 than to 37 because a greater percentage of naturally occurring chlorine atoms have the mass number of 35.
What is the atomic mass of chlorine 35?
34.968852
Reference E95
| Isotope | Mass | Abundance |
|---|---|---|
| 35Cl | 34.968852 | 75.77\% |
| 37Cl | 36.965903 | 24.23\% |
What is the atomic mass of chlorine-35?
How do you explain fractional atomic weight 35.5 of chlorine?
Atomic masses of the isotopes of chlorine are 35 and 37. However, in any given sample of chlorine gas, the isotopes occur in the approximate ratio 3:1, 75\% of Cl35 and 25\% of Cl37. So, the relative atomic mass or atomic weight of chlorine is 35.5.
What is the mass of chlorine-35?
Reference E95
| Isotope | Mass | Spin |
|---|---|---|
| 35Cl | 34.968852 | 3/2 |
| 37Cl | 36.965903 | 3/2 |
Why is chlorine-35 more abundant?
Chlorine naturally exists as two isotopes, 17 35 Cl (chlorine-35) and 17 37 Cl (chlorine-37). The abundance of chlorine-35 is 75\% and the abundance of chlorine-37 is 25\%. This is because the chlorine-35 isotope is much more abundant than the chlorine-37 isotope.
Is the mass of 35\% of chlorine the same as 37?
No, the mass 35.5 is actually the average mass of the isotopes of chlorine that occur in different percentages. Chlorine has 2 isotopes one having atomic mass 37 which is found to be 25\% and the other one is having atomic mass 35 which is found to be 75\% in nature.
Is there any chlorine atom with atomic weight 35?
There does not exist chlorine atom with atomic weight 35.5. Atomic weight of chlorine is taken as 35.5 because — Chlorine exists in two isotropic forms Cl- 35 and Cl-37. The percentage abundance of chlorine of atomic mass 35 is around 75\% whereas Cl-37 is 25\%.
How do you calculate the atomic weight of chlorine?
The atomic weight, or as it is properly called, the RELATIVE atomic mass, is a weighted average of the masses of all the isotopes of chlorine. Relative Atomic Mass = ( 75 100 ×35) + ( 25 100 × 37) = 35.5
What is the number of neutrons in chlorine 35?
In the case of chlorine, some atoms have 18 neutrons (this isotope is called Cl-35 because the mass is 35), some have 20 neutrons (isotope Cl-37), and a few have different number of neutrons. These isotopes occur naturally with different abundances.