What is relative atomic mass of an element ?

ADVERTISEMENTS:

The relative atomic mass of an element is defined as the average relative mass of an atom of the element compared with an atom of 126 C taken as 12 u. Thus, relative atomic mass of an element (Ar) = Average mass of 1 atom of the element / (Mass of one 126 Can atom/ 12).

The relative atomic mass is denoted by Ar. The relative atomic mass is a pure number, and hence it has been no unit.

The relative atomic mass of an element is heavier than number of times one atom of that element is heavier than 1/12th of a 126 C atom. For example, the average relative mass of chlorine is 35.45. This means that an atom of chlorine only average is 35.45/12 times heavier than one atom of 126 C.

ADVERTISEMENTS:

Names, symbols and relative atomic masses of some common are present.

, , , ,

Web Analytics Made Easy -
StatCounter
Kata Mutiara Kata Kata Mutiara Kata Kata Lucu Kata Mutiara Makanan Sehat Resep Masakan Kata Motivasi obat perangsang wanita