# What are the 3 isotopes of oxygen?

## What are the 3 isotopes of oxygen?

The element oxygen has three stable isotopes: 16O, 17O, and 18O.

## How many neutrons are in an isotope of oxygen?

8 neutrons
Because protons and neutrons are roughly equal in mass, an isotope’s number is equal to the sum of its protons and neutrons. Therefore, oxygen 16 has 8 protons and 8 neutrons, oxygen 17 has 8 protons and 9 neutrons, and oxygen 18 has 8 protons and 10 neutrons.

Are oxygen 17 and oxygen 18 isotopes of oxygen?

There are three known stable isotopes of oxygen (8O): 16O, 17O, and 18O. Radioactive isotopes ranging from 11O to 26O have also been characterized, all short-lived.

### What isotope has 3 neutrons?

H contains one proton and three neutrons in its nucleus. It is a highly unstable isotope of hydrogen. It has been synthesized in the laboratory by bombarding tritium with fast-moving deuterium nuclei.

### How many isotopes does oxygen have?

three
The element oxygen (O) is found in three naturally occurring stable isotopes, 18O, 17O, and 16O. The nucleus of each of these oxygen isotopes contains eight protons and either eight, nine, or ten neutrons, respectively.

How many mass number does oxygen have?

16
The most common Isotope is found by rounding the Weighted average found on the periodic table to the nearest whole number. In this case Oxygen has a Weighted Average Atomic Mass of 15.999 AMU. So the Mass Number is 16.

#### How many neutrons are in oxygen-18?

10 neutrons
“Light” oxygen-16, with 8 protons and 8 neutrons, is the most common isotope found in nature, followed by much lesser amounts of “heavy” oxygen-18, with 8 protons and 10 neutrons.

#### How many neutrons does isotope 120 have?

70
Properties of Tin-120 Isotope:

Properties of Tin-120 Isotope: TIN-120
Neutron Number (N) 70
Atomic Number (Z) 50
Mass Number (A) 120
Nucleon Number (A) 120

What isotope has 3 protons and 3 neutrons?

lithium atom
b. Notice that because the lithium atom always has 3 protons, the atomic number for lithium is always 3. The mass number, however, is 6 in the isotope with 3 neutrons, and 7 in the isotope with 4 neutrons.

## What has 4 protons and 3 neutrons?

Lithium
Lithium, for example has three protons and four neutrons, leaving it with a mass number of 7.

## How many neutrons does an oxygen isotope have?

The most common isotope of oxygen has 8 neutrons. Its atomic number is 8.

What are the isotopes of oxygen in water?

Oxygen is made up of two isotopes: Oxygen – 16 (also known as 16O  8 protons + 8 neutrons; a “light” oxygen); Oxygen – 18 (aka 18O  8 protons + 10 neutrons; a “heavy” oxygen). 16 and 18 are atomic masses of isotopes 16O and 18O. The relative amounts of these two isotopes in a sample of water,

### How is the mass of an isotope related to its isotope number?

An isotope number is a shorthand representation of its mass. Because protons and neutrons are roughly equal in mass, an isotope’s number is equal to the sum of its protons and neutrons. Therefore, oxygen 16 has 8 protons and 8 neutrons, oxygen 17 has 8 protons and 9 neutrons, and oxygen 18 has 8 protons and 10 neutrons.

### What are the atomic masses of oxygen-18?

Oxygen – 18 (aka 18O 8 protons + 10 neutrons; a “heavy” oxygen). 16 and 18 are atomic masses of isotopes 16O and 18O. The relative amounts of these two isotopes in a sample of water, ice, rock, plant, human, etc. is a function of climate/environment 16O ~99.8% 18O ~0.2% 18O/16O = 1/400 = 0.0025