'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]
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.
The isotope of hydrogen ; known as 'protium'. protium ; 1 proton, o neutrons, 1 electron ( Common hydrogen) [1/1]H deuterium ; 1 proton , 1 neutron , 1 electron ( heavy hydrogen) [2/1H] or 'D' tritium ; 1 proton 2 neutrons 1 electron ( super heavy hydrogen ; radio active ; very rare). [3/1]H or 'T'. These are the three isotopes of hydrogen, and only the protium isotope has no neutrons.
There is only ONE electron in the hydrogen atom . Here is a table of hydrogen isotopes. You will notice in all three cases there is only one proton and one electron. protium ([1/1]p) ; 1 proton, 0 neutrons , 1 electron deuterium ([2/1]d) ; 1 proton, 1 neutron , 1 electron tritium ([3/1]t) ; 1 proton, 2 neutrons , 1 electron NB helium ([4/2]He) ; 2 protons, 2 neutrons, 2 electrons.
An atom of lithium isotope 6Li has 3 electrons and 3 protons and 3 neutrons.
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.
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.
3
3
3
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.
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.
There is one electron in every hydrogen atom. They have 1, 2 and 3 neutrons respectively in protium, deuterium and tritium.
Deuterium, which is an isotope of hydrogen, has an atomic mass of 3. It has one proton and two neutrons in its nucleus.
Hydrogen-1, (there is a trace of hydrogen-2 (deuterium) found in nature, and hydrogen-3 is an artificial isotope)