an atom with no neutons must be hydrogen
2006-11-26 14:45:59 · 7 answers · asked by Anonymous in Science & Mathematics ➔ Chemistry
If there are no neutrons in the nucleus, there can be only one proton. If there were two or more protons, they would not stay together to form a nucleus without any neutrons.
And of course an atom with only one proton in its nucleus is hydrogen.
2006-11-26 14:49:20 · answer #1 · answered by actuator 5 · 0⤊ 0⤋
There are 3 isotopes of hydrogen. One weighs 1, one has 1 neutron and weighs 2, one has 2 neutrons and weighs 3. The weight 2 is called deuterium, the weight 3 is called tritium.
And then comes helium weight 4.
2006-11-27 12:55:59 · answer #2 · answered by science teacher 7 · 0⤊ 0⤋
An element with only 1 proton is always Hydrogen or one of its isotopes.
In order for two protons to exist together in the same atom there needs to be a neutron present.
The number of protons in the nucleus determines the chemical nature of an atom, but without neutrons it would be impossible for two or more protons to exist stably together within nuclear dimensions. The protons, being positively charged, repel one another by virtue of their electrostatic interactions. The presence of neutrons weakens the electrostatic repulsion, without weakening the nuclear forces of cohesion.
2006-11-26 22:52:37 · answer #3 · answered by TransparentEarth 2 · 0⤊ 0⤋
That is true, because any heavier atom than hydrogen (as well as two isotopes of hydrogen itself) contains at least one neutron. Without neutrons, an array of multiple protons would fly apart because of their electrostatic repulsion; the neutrons contribute a strong force component which keeps things glued together.
2006-11-26 22:49:31 · answer #4 · answered by Anonymous · 0⤊ 0⤋
Hmm maybe because Hydrogen is the only known element that has no neutron? -_-
It consists of only a proton and electron.
The isotopes of Hydrogen are not exactly hydrogen. Deuterium, for example, is not Hydrogen but an isotope of it. So technically it is the only element with no neutron although its isotope is.
As to why Hydrogen is the more important than its isotopes.. let's just keep our life simple =X
2006-11-26 22:49:17 · answer #5 · answered by cobrashake 2 · 0⤊ 0⤋
As it is the lightest element with only one particle in the nucleus. As there is an electron revolving around it, there must be a proton, hence no neutron.
2006-11-26 22:48:06 · answer #6 · answered by 6 · 0⤊ 0⤋
http://en.wikipedia.org/wiki/Neutron
it says all other elements have at least one neutron in their nucleus.
Not that they have to have neutron, but they just happen to.
2006-11-26 22:48:21 · answer #7 · answered by Anonymous · 0⤊ 1⤋