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Both are elements.
Hydrogen (symbol, H) belongs to group 1, has one proton and one electron and is highly reactive element. Hydrogen exists as a diatomic gas (H2).
Helium (symbol, He) belongs to group 8, has 2 protons and 2 electrons and is chemically inert as it has completely filled orbitals. Helium exists as mono atomic element.
What else can I help you with?
What is the most common element found in star?
Stars contain hydrogen, helium and a little iron.
What makes up two sun?
Hydrogen is the most common element in the universe as a whole; about 75% of the universe by mass is hydrogen (since hydrogen is also the lightest element, that means that the percentage by number of atoms is even higher) . Helium is second; oxygen is a fairly distant third.
What are two gasses common to the outer planets?
Hydrogen and Helium
What property do hydrogen and helium have in common?
Hydrogen and helium are both present in significant amounts in the universe. They are also both light gases that have low atomic masses.
What are the common elements present and their state of matter on Saturn?
The common elements of Saturn is Hydrogen and Helium. Saturn's powerful gravitational pull and atmospheric pressure allows Hydrogen and Helium to exist as a liquid around its core. In addition to being liquids most of its atmosphere is Hydrogen and Helium with Ammonia being the source of its yellow coloration.
What two elements are common in the sun?
The two common elements found in the sun are Hydrogen and Helium.
Gas giants have atmospheres composed primarily of helium and what?
Hydrogen and helium, the most common elements in the Universe.Hydrogen and helium, the most common elements in the Universe.Hydrogen and helium, the most common elements in the Universe.Hydrogen and helium, the most common elements in the Universe.
What is the most common element found in star?
Stars contain hydrogen, helium and a little iron.
What two elements are commonly found in stars?
The two most common ones are hydrogen and helium gas
Gas giants have atmospheres composed of what and what?
Hydrogen and helium, the most common elements in the Universe.Hydrogen and helium, the most common elements in the Universe.Hydrogen and helium, the most common elements in the Universe.Hydrogen and helium, the most common elements in the Universe.
What makes up two sun?
Hydrogen is the most common element in the universe as a whole; about 75% of the universe by mass is hydrogen (since hydrogen is also the lightest element, that means that the percentage by number of atoms is even higher) . Helium is second; oxygen is a fairly distant third.
What are the 2 most common elements in a star?
helium and hydrogen
What are two gasses common to the outer planets?
Hydrogen and Helium
What are the two most common elements of the universe?
Hydrogen and helium.
What two elemants are the most common in the universe?
Hydrogen and helium.
What is most common element in stars What is the second most common elemen?
Hydrogen, helium.
Why is oxygen and silicon the most common elements?
They are not, the most common elements are Hydrogen and Helium.
