According to wikipedia hydrogen has three naturally occuring isotopes, 1H, 2H and 3H. 4H through 7H have been created in the laboratory but they are very short-lived.
every element has isotopes.
No
complementary nucleotide sequences labeled with radioactive isotypes
a drawing, diagram, or other symbol that represents a specific quantity of or other fact about the thing depicted
they have in common same number of protons and same number of electrons.
Simon John Lambert has written: 'Myosin isotypes in the developing and adult large mammalian heart'
The isotopes of any element have the number of protons and of electrons in their atoms in common, and their chemical properties are almost if not fully identical.
Some isotypes are more stable than others. Decay occurs because of instability in isotopes, so stable isotopes do not undergo radioactive decay.
Hydrogen Hydrogen Hydrogen Hydrogen
hydrogen and hydrogen gas are same hydrogen is gas
Hydrogen, helium, hydrogen sulfide, hydrogen selenide, hydrogen telluride, hydrogen fluoride, hydrogen chloride, hydrogen bromide, hydrogen iodide.
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