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# What is the difference between 35Cl and 37Cl?

Updated: 8/10/2023

Wiki User

11y ago

Their number of neutrons.

Chlorine 35 and Chlorine 37, What is the difference?

Basically, they are both chlorine. They are not distinguished as 2 different elements because they consist of the same number of protons. The atomic number, aka proton number, is what differs between elements.

The 2 of them are isotopes of the same element. The number 35 and 37 represents their mass number, which is the number of protons + number of neutrons. Hence, we can see that Chlorine 37 has 2 more neutrons compared to Chlorine 35.

What is different then?

Isotopes of the same element are identical. A heavier isotope might tend to react slower than a lighter one, which in this case, Chlorine 37 is the heavier one. Isotopes with more neutrons also have better nuclear stability.

Isotopes also differ in abundance in nature. Chlorine 35 has an abundance of 75.53%. As chlorine only exist in 2 isotopes, the rest of chlorine found will be Chlorine 37, meaning that it will have an abundance percentage of 24.47%.

Wiki User

11y ago

Wiki User

12y ago

Cl 35 and Cl 37 are isotopes. Isotopes are atoms with the same number of protons and electrons, but a different number of neutrons. Cl 37 has two more neutrons than Cl 35. Their chemical properties would essentially be the same however, because the number of protons and electrons are the same.

Wiki User

11y ago

nuetrons

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Q: What is the difference between 35Cl and 37Cl?
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Related questions

### Which chlorine isotope has more abundance?

35Cl: 75,77 %37Cl: 24,23 %

### How many isotopes are in table salt?

Five isotopes: 22Na, 23Na, 35Cl, 36Cl, 37Cl.

### How can you convert the number of atoms of these isotopes 35Cl and 37Cl to percentage?

Chlorine-35 is 76 % and chlorine-37 is 24 %.

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### What is the difference between chlorine 35 and chlorine 37?

The electron structure of the two isotopes is the same. They differ in the number of neutrons in the nucleus- 37Cl has two more than 35Cl

### What are the chlorine components?

Chlorine is a natural chemical element, a gas with a diatomic molecule (Cl2). As all chemical atoms the nucleus contain protons and neutrons. Chlorine has two natural isotopes: 35Cl and 37Cl.

### What is natural abundance of chlorine?

Most of the chlorine on Earth exists as sodium chloride or common salt. It is the 21st most abundant element in the Earth's crust. Chlorine has two principal isotopes, 35Cl (75.78%) and 37Cl (24.22%).

### How many neutrons are in the nucleus of a Chlorine atom?

18.5 neutrons Neutrons can not be a fraction. Must be a whole number. Chlorine has 18 neutrons

### Why does chlorine have a mass number of 35.5 when you cannot have half a proton or neutron in the nucleus?

First some basic terminology for the periodic table:Atomic number: The number of protons in the element's nucleus.Atomic mass: The total mass of the protons, neutrons, and electrons that make up a particular isotope of an elementAtomic weight: The average weight of an elemental atom, taking into account the relative abundance of the element's isotopes. This is getting to the crux of your question - I may not have explained atomic weight that well, but the example of Cl below will better illustrate what I mean by atomic weight. (And btw, 'mass number' isn't a correct way to refer to the atomic weight.)Take the example of Chlorine, or Cl. There are two main isotopes of Cl, 35Cl and 37Cl (there are others but they are very rare, so we'll simplify). We'll now calculate the atomic weight (or as you referred to it incorrectly, mass number) based on the relative abundance and atomic masses of these two isotopes. I'm going to round to even numbers to symplify.Chlorine has an atomic number of 17, so we know all of its isotopes have 17 protons (and therefore 17 electrons).35Cl has 17 protons, 17 electrons and 18 neutrons, while 37Cl has 17 protons, 17 electrons, and 20 neutrons.Because 35Cl and 37Cl have the same number of protons and electrons (as do all isotopes of the same element) they behave very similarly. They are isotopes since they have different numbers of neutrons, and therefore 35Cl and 37Cl have different atomic masses.35Cl has an atomic mass of 35, and 37Cl has an atomic mass of 37.Since 35Cl makes us almost 77% of all Cl isotopes on earth, and 37Cl makes up almost all of the remaining 23% of Cl isotopes on earth, we get the atomic weight by calculating the average weight of Cl.Atomic weight = (% abundance of isotope A * atomic mass of isotope A) + (% abundance of isotope B * atomic mass of isotope B)Atomic weight of Chlorine = (0.77 * 35) + (0.23 *37)Atomic weight of Chlorine = 35.46

### What s chlorine?

Chlorine is a natural chemical element, a gas with a diatomic molecule (Cl2). As all chemical atoms the nucleus contain protons and neutrons. Chlorine has two natural isotopes: 35Cl and 37Cl. For more details see the link below.

### Why atomic mass of chlorine is 35.5?

Because chlorine atoms occur as two isotopes: 35Cl and 37Cl. The first accounts for 75.76% of chlorine and the second for the rest so the [weighted] average mass is(75.76*35 + 24.24*37)/100 = 35.48 = 35.5, approx.

### Chlorine has an average atomic mass of 35.45 atomic mass unit The two naturally occurring isotopes are Chlorine-35 and Chlorine-37 Why does this indicate that most chlorine atoms contain 18 neutrons?

This has to due with the abundance of each. Lets break it down for a moment.The mass number is the sum of the number of protons and the number of neutrons. All chlorine atoms have 17 protons, so if we so a little subtraction, we can find out that there are 18 neutrons in 35Cl (Chlorine-35) and 19 neutrons in 37Cl. Another important piece of information that we need to know is that the Atomic Mass is an average of its isotopes. So lets say that there are equal amounts of 35Cl and 37Cl (50% of each). If we calculated the atomic mass (the average of the two), we would get a number that's directly in-between 35 and 37 since they are found in equal amounts in nature. Then the atomic mass would be 36.But we know this isn't true. There are not equal amounts of each isotope in nature; therefore, the atomic mass will not fall directly between the two masses of isotopes. The atomic mass of chlorine is 35.45, which means one isotope is more abundant than the other. Since 35.45 is closer to the weight of 35Cl, we know there is more of that isotope than 37Cl. Then, because we already figured out that there are 18 neutrons in 35Cl, we can officially say that most chlorine atoms have 18 neutrons.