Question

Hydrogen exists in three isotopic forms, ¹H₁,1 ²H₁, ³H₁ known as protium, deuterium and tritium. Why are all the isotopes neutral in nature?
Options:

Since neutrons are neutral in nature hence isotopes are electrically neutral.
All the isotopes have one electron and one proton, hence they are neutral.
All the isotopes have one proton and one neutron, hence they are neutral.
Increasing number of protons in the isotopes make them neutral.

Answer 1

Answer:

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]

Main isotopes of

hydrogen

(1H)

Iso­tope Decay

abun­dance half-life (t1/2) mode pro­duct

1H 99.99% stable

2H 0.01% stable

3H trace 12.32 y β− 3He

Standard atomic weight Ar, standard(H)

[1.00784, 1.00811][1]

Conventional: 1.008

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The three most stable isotopes of hydrogen: protium (A = 1), deuterium (A = 2), and tritium (A = 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.)