Question

s isotope is called pretium (H). Rest of the
centage of hydrogen atom contains two other
copes, the one containing 1 proton and i
tron is called deuterium (D, 0.015%)
I the other one possessing 1 proton and 2
trons is called tritium (T). The latter
cope is found in trace amounts on the earth.
her examples of com

Answer 1

hlo mate here is ur ans........

Hydrogen (1H) has three naturally occurring isotopes, sometimes denoted 1H, 2H, and 3H. The first two of these are stable, while 3H has a half-life of 12.32 years. There are also heavier isotopes, which are all synthetic and have a half-life less than one zeptosecond (10−21 second). Of these, 5H is the most stable, and 7H is the least.[2][3]

Hydrogen is the only element whose isotopes have different names in common use today: the 2H (or hydrogen-2) isotope is deuterium[4] and the 3H (or hydrogen-3) isotope is tritium.[5] The symbols D and T are sometimes used for deuterium and tritium. The IUPAC accepts the D and T symbols, but recommends instead using standard isotopic symbols (2H and 3H) to avoid confusion in the alphabetic sorting of chemical formulas.[6] The ordinary isotope of hydrogen, with no neutrons, is sometimes called protium.[7] (During the early study of radioactivity, some other heavy radioactive isotopes were given names, but such names are rarely used today.)

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