No the atomic number is same for the three isotopes of hydrogen (it is 1). The three isotopes of hydrogen differ by the number of neutrons.
both the atomic number and the atomic mass remain the same.
The 'standard' hydrogen atom has atomic number 1, atomic mass 1, no neutrons. Although there are 2 other isotopes of hydrogen: - (cant confirm name) which has atomic mass 2 and 1 neutron. - (cant confirm name) has atomic mass of 3 and 1 neutron. All isotopes have atomic number 1.
The element with the lowest atomic number is hydrogen.
Isotopes have the same atomic number and different mass. This difference is due to different number of neutrons in them. That is why the mass of chlorine comes to be 35.5, a fraction.
Isotopes. They differ in the number of neutrons in the nucleus.
The isotopes of hydrogen are all hydrogen. They have the same number of protons, or atomic number, which is unique to each element.
both the atomic number and the atomic mass remain the same.
Same number of protons, different number of neutrons
The 'standard' hydrogen atom has atomic number 1, atomic mass 1, no neutrons. Although there are 2 other isotopes of hydrogen: - (cant confirm name) which has atomic mass 2 and 1 neutron. - (cant confirm name) has atomic mass of 3 and 1 neutron. All isotopes have atomic number 1.
The element with the lowest atomic number is hydrogen.
Isotopes are atoms with the same number of protons (same atomic number) but different numbers of neutrons, leading to different atomic masses. For example, carbon-12 and carbon-14 are isotopes of carbon with atomic number 6 but atomic masses of 12 and 14 respectively.
Isotopes have the same atomic number and different mass. This difference is due to different number of neutrons in them. That is why the mass of chlorine comes to be 35.5, a fraction.
Isotopes. They differ in the number of neutrons in the nucleus.
No. Isotopes have the same atomic number, protons and electrons. They have different neutrons.
Same number of protons (=atomic number in the P.S.)Different number of neutronsDifferent in MASS NUMBER (=the sum of the number of protons AND neutrons, and also roughly equal to the atomic mass)fr eg isotopes of hydrogen are: H1 H2 H3their mass numbers are different but their charge number or atomic number (no.of protons) is the same. that is why isotopes have different physical but same chemical properties.
If they have the same atomic number but different mass, then they have a different number of neutrons, and they are called ISOTOPES.
I don't know where you got the notion that elements of odd atomic numbers have two isotopes, but we don't have to look far for a counterexample: hydrogen... atomic number 1... has not one, not two, but THREE isotopes that exist for meaningful lengths of time. If you mean STABLE isotopes, then we have to go a bit further: the first four elements of odd atomic number (hydrogen, lithium, boron, nitrogen) do in fact have two stable isotopes. However, at the fifth we find our counterexample: fluorine (atomic number 9) has only one stable isotope, fluorine-19. Furthermore, helium (atomic number 2) ALSO has two stable isotopes, so we can't even invert the original question and ask why EVEN atomic number elements DO NOT have two isotopes. The question is therefore meaningless, as it's asking for an explanation of something that does not, in fact, actually happen.