The two most common elements in the universe are

What are the two most common elements in the universe? ? What is the reason for their abundance? Chemistry is an obstacle for many high school students, it requires careful thinking and intelligence in the ability to perceive information and store it in all its properties, and this is the most questioned by students, so we will explain the most common elements in the universe below.

What are the two most common elements in the universe? Reply

hydrogen and helium

The two most common elements in the universe are

American chemist from the University of Oregon, Mae Neiman, said that the lower the atomic element of an element, the more abundant it is in the universe, and the correct answer to the two most common elements in the universe is: "hydrogen and helium ".

Hydrogen is one of the most abundant elements, accounting for 75% of the total components of the universe, followed by helium, where it makes up 25%, and when the two elements are combined together, we find that they make up about 99.9% , of the common elements in the universe.

We also find that the element that follows these two elements is oxygen, which is a thousand times less abundant than hydrogen.As for the rest of the elements, they are very rare elements, and it is worth noting that the chemical composition of the universe is not like that of the Earth.

Because we find that the most abundant element in the earth's crust is oxygen, which is approximately 46.6% of the mass of the Earth as a whole, followed by silicon with 27.7%, then aluminum with l 8.1% and then by iron with 5% and calcium by 3.6%.

We will now learn in detail the two most common elements in the universe through the following.

Also not to be missed: Halogens are non-metallic reactive elements, which from the following group quickly combine with them

Causes of hydrogen diffusion

All chemical elements contain a group of particles, which are: neutral neutrons, positively charged protons and negatively charged electrons.

Scientist "May Niemann" pointed out that hydrogen is one of the simplest elements in the universe, as it is also composed of a proton and an electron.

It is also considered the only element that is devoid of it neutronWhich explains why it is the most common element in the universe, and it should be noted that the isotopes of hydrogen have neutrons, for example we find that deuterium contains only one neutron and tritium contains two neutrons.

The main uses of hydrogen

The two most common elements in the universe areThe two most common elements in the universe are

Chemistry is an information-rich sea, containing many multipurpose elements, especially hydrogen, and therefore it is classified between the two most common elements in the universe, and its uses can be summarized as follows:

  • The hydrogen that is extracted from methane gas goes into the production of the industrial chemical "methanol", which is often used as a fuel for the production of other chemicals, such as: Calformaldehyde It is used in the plastics industry and methanol can also be easily converted to synthetic gasoline.
  • This element combines with nitrogen at high temperatures and pressures; This serves to form ammonia, which is fed into the production of fertilizers, and nitric acid.
  • Hydrogen enters the food industry; Because it is used in the conversion of oils into sunflower oil, which is represented in semi-solid materials such as margarine.

Also not to be missed: A guide to the chemical elements and their symbols in order

What is the difference between blue and green hydrogen?

Hydrogen gas has two colors, "blue and green", and contrary to popular belief, they are not the same thing, but the difference between them is very simple, which we will explain in the following points:

  • blue hydrogen: It is made from fossil fuels, so that carbon emissions are captured and stored.
  • green hydrogen : It is created from non-fossil sources and is a favorite type for those who fear for the environment and their safety, so we find that many warnings have been received about the continuation of the fossil economy.

Uses of the element helium

The element helium is one of the second most common elements in the universe after helium, and it is one of the inert elements, and one of its characteristics is that it is colorless, odorless and tasteless, and its largest mass is concentrated in stars. , and this is due to the nuclear fusion process, and is from the 18th group of Nobel Gas.

The weight of helium gas is 4 g mol-1 and this element is a very light element, it is considered lighter than air and its melting point is (0.95 K)and the boiling point is (4.22k) of helium.

It is one of the lowest values ​​compared to other elements, so it is used to fill balloons, as well as airships, and we will learn the uses of this element through the following paragraph:

  • It is used as a cooling agent in the Wide Hadron Collider, as it cools the superconducting magnets in magnetic resonance scanners and nuclear magnetic resonance spectrometers.
  • It is used in satellite devices to keep them cool.
  • It is used in the manufacture of a helium ion microscope, to provide a better and more accurate image than a scanning electron microscope.
  • It has a low density, so it is used to make weather balloons and airships.
  • Power the Apollo spacecraft by cooling liquid oxygen and helium.
  • The laser uses helium and neon gas to scan barcodes to read commodity prices.
  • One of the factors that protect and protect, therefore it is used in the protection of optical fiber and semiconductor manufacturers.
  • Detect any leaks, for example: car air conditioning leaks.

Also not to be missed: What is green hydrogen?

What is the difference between hydrogen and helium?

considering that hydrogen and helium The two most common elements in the universe, we find that we need to differentiate them, and this is very simple, and we will show you through the table below:

Compare hydrogen helium
atomic number 1 is represented by the symbol H 2
the atomic weight 4.002602 amu 1.00794 amu
Atomic number 1 2
complex It is found in hydrogen as a diatomic gas molecule. It is found in helium as a monatomic gaseous substance.
isotopes contains: "Great-uncle, deuterium and tritium". It has two main isotopes, 3 and 4.
Oxidation It has -1, 0 and +1 oxidation states. It contains only 0 oxidation states.
fusion point -259 degrees Celsius. -272.2 degrees Celsius.
Emphasizes flammable. flammable.

The two most common elements in the universe are often requested by students studying chemistry, because this information is very important and can come in the test.