Why is hydrogen shown by itself on the periodic table?

Answer 1

Hydrogen is the first element on the Periodic Table. Being first, all the other elements are jealous of it, because it is lightest, it doesn't have neutrons, etc. So it's alone, but not by choice. It loves itself, which is why you see elemental hydrogen in pairs.

Answer 2

Hydrogen (the isotope hydrogen-1 or protium) consists of just one proton and one electron, it behaves unlike any other element.

Hydrogen is a gas at room temperature, the lightest chemical element.

Hydrogen was placed in the first group of the Periodic table of Mendeleev because it is considered partially similar to alkaline metals.

Answer 3

Hydrogen consists of just one proton and one electron (the cause of why hydrogen behaves unlike any other element) because of this hydrogen is in a class alone in the periodic table of elements.

Answer 4

It is in its own family because no other element has 1 electron and proton. i hope this helped:)

Answer 5

Hydrogen is in a family by itself because it only has one proton and one electron.

Answer 6

Hydrogen only has one proton and one electron. Hydrogen does not exhibit the same properties shared by the elements making up any of the groups in the Periodic Table.

Answer 7

because it has an atomic number 1 good luck

Answer 8

Because it has different chemical properties than other elements. Hydrogen is a gas at room temperature. It shows a few similar properties for group 1 and 17.

Answer 9

Hydrogen has 1 electron. So it is placed separately on the top.

Answer 10

because sometimes it acts like a metal (forms a positive ion) and sometimes like a non-metal (forms a negative ion). This is because it has one electron and can either lose it or gain another to have a full outer shell.