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**Quick and Dirty**
Hydrogen has one proton and Helium has two protons and two neutrons.
**Long winded version**
HYDROGENS:
There are also 3 types of Hydrogen-like atoms: Hydrogen, Deuterium and Tritium.
We have three types of Hydrogen atoms because we define Hydrogen itself as one proton and one electron. But if you add one neutron to the mix, then the electric properties of the atom do not change and so it is still Hydrogen, but we call it Deuterium. If you add one more neutron to the mix, then we call it Tritium; but again the electric properties stay the same.
We have different names because there is a difference in nuclear properties, namely neutron count but also half-life. The half-life of hydrogen and deuterium is ad infinitum (to infinite), because they are stable and have not yet been reported to decay on their own. But the half life of tritium is 12.32 years. This is rather short, but not too short; it means that it is unstable, but still useful and can be stored. This all shows that the Proton + Neutron and Proton only states are stable but that adding a second neutronn, without adding a second proton, makes the nucleus unstable.
HELIUM:
Helium can be considered a tritium atom plus a hydrogen atom. It has 2 protons, 2 neutrons and 2 electrons. The nucleus by itself (no electrons) is called an alpha particle because it was experimented before we knew what helium was.
ELECTRIC PROPERTIES:
Another big difference between Hydrogen and Helium is the electric properties. Helium is the most stable atom that we know of. This means that it will not share or give up it's electrons for any reason; very selfish. But Hydrogen is constantly looking for a second electron to complete its first valence shell. As a result, hydrogen will covalently and ionically bond with almost anything! That's why it is so reactive (and known to be explosive).
What else can I help you with?
How is the nucleus of the hydrogen atom different from the nucleus of the helium atoms?
The hydrogen nucleus has a single proton. The helium nucleus has two protons and one or two neutrons.
Which is lighter - helium or hydrogen?
Helium is lighter than hydrogen. Helium has an atomic number of 2, which means it has two protons and two neutrons in its nucleus, making it lighter than hydrogen, which has only one proton in its nucleus.
Are hydrogen-3 and helium -3 isotopes of the same element?
No, hydrogen-3 (tritium) and helium-3 are not isotopes of the same element. Hydrogen-3 is an isotope of hydrogen, while helium-3 is an isotope of helium. They have different numbers of protons and neutrons in their nuclei, giving them distinct chemical and physical properties.
How many different types of atoms are in helium?
Helium is an element, so it is made of only one type of atom.
Are hydrogen-3 and helium-3 isotopes of the same element?
No. hydrogen-3 (tritium) has a nucleus with one proton and two neutrons, and is unstable. Helium-3 has a nucleus with two protons and one neutron, and is stable.
How is helium atom different from a hydrogen atom?
Helium has a nuclear charge of +2 and 2 electrons in a 1s orbital. Hydrogen has a nuclear charge of +1 and just one electron in a 1s orbital. The extra charge on the nuclees means that the electrons in He are more tightly bound than in hydrogen thuis reflected in the ionization energy of 2372 kJ/mol for He and about 1312 kJ/mol for hydrogen. For helium t the "outer shell" is full, a "stable " configuration.
What is the difference between helium and deuterium?
Helium is a noble gas with atomic number 2 and is commonly used in balloons. Deuterium is a stable isotope of hydrogen with one proton and one neutron in its nucleus. Deuterium is often used in nuclear reactions and as a tracer in scientific research.
How do you know that a deuterium is a form of hydrogen not a form of helium?
Deuterium has 1 proton, and therefore an isotope of Hydrogen. Remember the number of protons is what changes the atomic number, and what element a atom is. When tritium and deuterium react under immense pressure and heat they form Helium (and omits a neutron) This is the most basic example of nuclear fusion.
What is the result if one neutron is added to a hydrogen nucleus?
It doesn't matter. You'll still get a hundred on Bharat's test without knowing the answer to this one. PHYS 100 is cake. >.No that's wrong. The result is going to be Helium.
When two hydrogen nuclei combine to form one helium nucleus fusion has taken place true or false?
Yes it is true. In fusion reactions, two nuclei (not necessarily be hydrogen) combine to form a larger nucleus.
Do proton-proton chain convert four hydrogen nuclei into one helium nucleus?
Yes, the proton-proton chain involves a series of nuclear reactions where four hydrogen nuclei (protons) are fused together to form one helium nucleus. This process releases energy in the form of gamma rays and solar neutrinos.
An atomic number is equal to?
The atomic number is equal to the number of protons in the nucleus of an atom of that element. For example, oxygen has eight protons in its nucleus, helium has two, and hydrogen has one.
