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.
H on periodic table is for Hydrogen.It is the first and lightest element on periodic table.It combines with oxygen to form water.
Fluorine or Bromine have similar properties to chlorine because both are halogens.
The periodic table is arranged by atomic mass. Hydrogen is the lightest element. Its atomic mass is one.
Selenium, the element immediately below sulfur in the same column of a wide form periodic table. (The element immediately above sulfur in the same column, oxygen, is the lightest element in the column, and these lightest elements in a column of main group elements often have chemical properties somewhat different from all the other elements in the column. Sulfur, for example, has a much lower electronegativity than oxygen, while the difference between electronegativities of selenium and sulfur is much less.)
No, hydrogen is ?the lightest element in the periodic table.
Hydrogen.
the lighest element is berrylium.
Helium with an atomic number of 2,is the lightest gas on the periodic table :)
Helium with an atomic number of 2,is the lightest gas on the Periodic Table :)
Helium is the lightest member in group 18.
helium
the element is Hydrogen
Bromine is an element. It has both physical and chemial properties
Helium is the lightest member in group 18.
who are you have you ever looked at the periodic table of elements? Hydrogen is the lightest element while helium is the second lightest element. No.
Yes. Bromine is an element. Its symbol is Br. It is placed in Group-17 of periodic table.