Hydrogen
Hydrogen is a unique element of the Periodic Table. Due to its similarities in properties it can be placed at the top of group 1A or 4A or 7A.
The element carbon is unique because it has four valence electrons, allowing it to form four bonds with other molecules. It also is unique in the sense that it can bond with other carbons, something most other elements cannot do.
It is hydrogen. This element is the only one in its group because it is extremely unique and shares none of the properties of other gases.
Each atom of an element has the same number of protons which is unique for that particular element ( = atom number in the periodic system)
I believe that is the definition of an element. true
Hydrogen is the element with unique properties that doesn't fit in any group.
Hydrogen is the element with unique properties that doesn't fit in any group.
it is unique because it is the only kind of element out there
Hydrogen is an element because it is a pure substance with a unique atomic structure.
Hydrogen is an element because it is a pure substance with a unique atomic structure.
Hydrogen is a unique element of the Periodic Table. Due to its similarities in properties it can be placed at the top of group 1A or 4A or 7A.
Lanthanides and actinides are placed below the periodic table because of their unique physical and chemical properties.
The element carbon is unique because it has four valence electrons, allowing it to form four bonds with other molecules. It also is unique in the sense that it can bond with other carbons, something most other elements cannot do.
The number of protons in the nucleus. This gives the element its elemental number. I.E. Carbon has 6 protons and is element 6.
Each element has a unique number of protons. If another atom has the same number of protons as that element, it is the same element.
Hydrogen is a unique element of the Periodic Table. Due to its similarities in properties it can be placed at the top of group 1A or 4A or 7A.
Element do not repeat, each element is Unique.