'3'
Hydrogen exhibits three isotopes.
#1 protium ; 1 proton , ) neutroins, 1 electroin ( the most common isotope)
#2, deuterium ; 1 proton , 1 neutron , 2 electron ( known as 'heavy hydrogen)
#3 tritium ; 1 proton, 2 neutrons, 1 electron ( Radio active)
The respective symbols are
[1/1H] ; H or P
[2/1H] ; D
[3/1H ; T
The next most massive atom is helium(Hw ; symbol [4/2He]
Atomic number does not directly relate to # of neutrons, Atomic # is the number of protons in the atom of an element. You need to know the Atomic Mass of the element too-Not just the atomic # to find out how many neutrons it has. If you know the atomic mass, then you can subtract the element's atomic # from that and voila! you get the # of neutrons. If ur confused: atomic mass - atomic # = # of neutrons ^_^
It has three protons in its nucleus and three electrons around it (no statement can be made about the number of neutrons as it has two stable isotopes, both of which are quite apparent in samples).
If you are asking about just stable isotopes of elements this must be Helium-3, which has 2 protons and 1 neutron in its nucleus.
The other reasonable answer is Tritium or Hydrogen-3, which has 1 proton and 2 neutrons in its nucleus, but Tritium is radioactive with a halflife of about 12 years.
In principle one could have Lithium-3, but with 3 protons and no neutrons in its nucleus it would burst apart the moment it was formed.
None of the elements on the Periodic Table is shown as having an atomic mass of 3, these masses are weighted averages of the atomic masses of the various "naturally occurring" isotopes of that element: Hydrogen is just greater than 1, Helium is just greater than 4, Lithium is just less than 7, etc.
Lithium is a metal element. atomic number of it is 3.
Lithium is a metal element. Atomic number of it is 3.
Lithium, Li has an atomic number of three
One in each nucleus.
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All hydrogen atoms, regardless of the number of neutrons in its isotope (zero neutrons for protium, one for deuterium, two for tritium), would have only one proton.
On the periodic table H has 1 proton 1 neutron and 1 electron, H-2 will have 1 proton 1 neutron and 3 electrons. However this is not typically how a H atom acts, in order for the H atom to complete an octet (become more stable) it will lose that one electron and become a H +. Hope this helps.
No <-- Ignore this bullsh*t. The normal hydrogen has no neutrons, the alternative forms of hydrogen are those with 1 or 2 neutrons and are called isotopes. For example, nuclear power plants use "heavy water" in cooling. Water is H2O, 2 hydrogen atoms and 1 oxygen atom. However, "heavy water" contains an isotope of hydrogen with 1 extra neutron in each hydrogen atom.
There are three known naturally occurring isotopes of hydrogen; hydrogen-1 with one proton and no neutrons, hydrogen-2 with one proton and one neutron, and hydrogen-3 with one proton and two neutrons.
An atom of lithium isotope 6Li has 3 electrons and 3 protons and 3 neutrons.
It depends on the atom - Hydrogen is the only element with no neutrons, Helium has 2 Lithium 3 and so on up the periodic table.
There are two atoms with two neutrons. One is hydrogen-3 which is radioactive. The other is helium-4 which is a stable and inert atom.
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All hydrogen atoms, regardless of the number of neutrons in its isotope (zero neutrons for protium, one for deuterium, two for tritium), would have only one proton.
Tritium, also know as hydrogen 3, has 2 neutrons and one proton
There are three naturally occurring isotopes of hydrogen. The most common isotope, hydrogen-1, has no neutrons. It accounts for 99.99% of all hydrogen. Hydrogen-2 has a single neutron and accounts for most of the remaining .01%. Hydrogen-3 with two neutrons only exists in trace amounts.
There is one electron in every hydrogen atom. They have 1, 2 and 3 neutrons respectively in protium, deuterium and tritium.
Hydrogen only has one proton. A Hydrogen-3 atom contains one proton and 2 nuetrons. This is because atoms of a certain element can vary in the amount of nuetrons. The're called isotopes.
Deuterium, which is an isotope of hydrogen, has an atomic mass of 3. It has one proton and two neutrons in its nucleus.
Hydrogen has several isotopes, and the average atomic weight for a hydrogen atom is about 1.007 u. Here are the neutron counts for each isotope:Hydrogen-1 (Protium): no neutronsHydrogen-2 (Deuterium: one neutronHydrogen-3 (Tritium): two neutronsHydrogen-4 (Quadrium): three neutronsHydrogen-5: four neutronsHydrogen-6: five neutronsHydrogen-7: six neutrons