Hydrogen atom has three isotopes
Hydrogen (H) has three isotopes which are written as:
A molecule of ammonia has three atoms of hydrogen and one atom of nitrogen. What will be its atomicity? What is the valency of nitrogen?
i know about three isotopes of hydrogen-
protium , deuterium and tritium
but protium have atomic mass as 1 u.
then why it is called a isotope.
is has mass equal to simple hydrogen atom