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Group 5 (a)
Cerium belongs to lanthanoids. Its atomic number is 58.
Hydrogen is the very first element of the periodic table.It is used in hydrogen fuel.It has atomic number 1.It is lightest element known.
Calcium and Magnesium both belongs to second group.They both are Alkaline Earth Metals.Magnesium has 12 atomic number where as Calcium has 20 atomic number.
Gold (AU) is an alkaline earth metal with a relative Atomic Mass of 196.97, an atomic number of 79 in group class 1B
It is in period 2.
Group 5 (a)
Nitrogen has atomic number 7, so it belongs to the second period.
Arsenic is a metelloid from Group 15 of the periodic table. Use the link below for more information.
Nitrogen is in group 15 on the periodic table. The vertical columns on the periodic table are called groups or sometimes families.Nitrogen is in group 15 (and period 2).
Astatine is an element in the periodic table, belonging to group 7.It has an atomic number of 85.
Cerium belongs to lanthanoids. Its atomic number is 58.
In a given period, the element with lowest atomic mass will belong to group 1. It should also be noted that lithium is the metal with the smallest atomic mass.
Hydrogen is the very first element of the periodic table.It is used in hydrogen fuel.It has atomic number 1.It is lightest element known.
Calcium and Magnesium both belongs to second group.They both are Alkaline Earth Metals.Magnesium has 12 atomic number where as Calcium has 20 atomic number.
Caesium (Ce) is atomic number 55 of the Periodic Table of the Elements. Ce belongs to Group I and is 132.9 grams per mole.
it belong in the nitrogen family