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The mass number is the sum of the number of neutrons and protons. If we already know that there is one neutron and the mass number is two, then that means there is one proton. Any atom with one proton is hydrogen. This particular isotope is called deuterium.
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How many neutrons are in helium?
He-4 isotope has 2 neutrons. He-3 isotope has 1 neutron
How many neutrons electrons does helium have?
Helium-3 has 1 neutron and 2 electrons. Helium-4 has 2 neutrons and 2 electrons.
How many proton neutron electrons in a hydrogen isotope with mass of 2?
1 proton and 1 neutron is needed because the 2 in hydrogen 2 refers to the atomic mass and protons and neutron have a mass of about 2 daltons each.
How many protons and neutrons and electrons does helium-have?
Protons: 2 neutrons: 2 electrons: 2 Helium-3: 2 protons, 1 neutron, 2 electrons Helium-4: 2 protons, 2 neutrons, 2 electrons
How many protons neutrons and electrons does the inert gas helium have?
Helium has 2 protons, 2 neutrons, and 2 electrons.
What element has only 1 neutron?
The isotope helium-3 has only one neutron. It has 1 neutron, 2 protons and 2 electrons. You can get an atom's number of neutrons by subtracting its atomic number from its mass (nucleon) number.
How many neutrons are in helium?
He-4 isotope has 2 neutrons. He-3 isotope has 1 neutron
An example of an atom that has no charge is one that has A 2 protons 2 electrons and 1 neutron B 1 proton 2 electrons and 3 neutrons C 3 protons 1 electron and 3 neutrons?
2 protons, 2 electrons, and 1 neutron
What element has 1 protons 1 neutrons and 2 electrons?
It is hydrogen element. It is tritium isotope of hydrogen.
What is helium gas mean?
Helium is a gaseous element at STP and has 2 protons, 2 electrons. He-3 isotope has 1 neutron whereas He-4 isotope has 2 neutrons.
How many neutrons electrons does helium have?
Helium-3 has 1 neutron and 2 electrons. Helium-4 has 2 neutrons and 2 electrons.
How many proton neutron electrons in a hydrogen isotope with mass of 2?
1 proton and 1 neutron is needed because the 2 in hydrogen 2 refers to the atomic mass and protons and neutron have a mass of about 2 daltons each.
What element has 2 protons 1 neutron and 2 electrons?
Helium has 2 protons, 2 neutrons and 2 electrons. The symbol for helium is He and the atomic number is 2.
How many protons and neutrons and electrons does helium-have?
Protons: 2 neutrons: 2 electrons: 2 Helium-3: 2 protons, 1 neutron, 2 electrons Helium-4: 2 protons, 2 neutrons, 2 electrons
What element has an mass number of 2 and 1 neutron?
This is the isotope of hydrogen - deuterium.
What element has 1 neutron and mass number of 2?
This is the isotope of hydrogen - deuterium.
How many protons neutrons and electrons does the inert gas helium have?
Helium has 2 protons, 2 neutrons, and 2 electrons.
