0
Helium is number 2 on the Periodic Table, and the number of its mass is 4. So, therefore it has 2 protons, 2 neutrons, and 2 electrons !
What else can I help you with?
Which one has fewer protons Nitrogen or Helium?
The periodic table is a good reference - check out the atomic number ! Helium - 2 protons, Nitrogen - 7 protons
What element has one proton and two neutrons?
The number of protons defines the element. So if an atom has one proton, you will automatically know it is hydrogen. The number of neutrons or electrons will not change what element it is. Though if the question is asking, hydrogen with two protons is 3H, or tritium.
What has 2 electrons 2 neutrons and 2 protons?
An atom with 2 protons is naturally Helium. Therefore, this isotope would be called helium - 5 because it has 5 particles in its nucleus, 2 protons and 3 neutrons.
What is Atomic number 2?
Atomic number 2 corresponds to the element Helium. Helium has 2 protons in its nucleus, making it the second element on the periodic table. It is a colorless, odorless gas and is the second most abundant element in the universe.
What are two atoms called when they have different number of protons?
The atomic number is the number of protons, so in this case it is 2, which is Helium. The charge or ionization of the atom is the difference between the number of protons and the number of electrons; in this case, they are the same, so the atom is neutral (not ionized). The atomic mass number is the sum of the protons and neutrons, so in this case 4. Thus, you have a non-ionized atom of Helium-4.
What does the number 2 indicate in helium?
2 is the atomic number (or the number of protons) of helium.
Which noble gas has the least number of protons?
Radon (as down a group, the atomic size increases and the ionization energy decreases)
What is the number of protons in helium?
2
How many protons are there in heliume?
There are 2 protons in a helium atom. Helium is the second lightest element on the periodic table, with an atomic number of 2, indicating the number of protons in its nucleus.
Helium with two protons and two neutrons has a atomic number of what?
Helium with two protons and two neutrons has an atomic number of 2, as the atomic number corresponds to the number of protons in an atom.
Why does helium not have a charge?
all atoms generally do not have charge as the number of protons and number of electrons will be the same.
Which one has fewer protons Nitrogen or Helium?
The periodic table is a good reference - check out the atomic number ! Helium - 2 protons, Nitrogen - 7 protons
Why does helium have an atomic number of 2 and atomic mass of 4?
An atom's atomic weight is the total of all protons and neutrons in its nucleus. Helium almost always contains two protons and two neutrons. Therefore, its atomic weight is 2 + 2 = 4.
What is the symbol for 2 electrons and 2 protons?
Number protons equal to atomic number. So the element is Helium
What is helium's number of electrons?
Helium has 2 protons and 2 electrons.
What is the superscript 4 for helium?
4He or He4. 4 stands for the mass number of Helium Mass number = number of protons + number of neutrons Since the atomic number or number of protons in helium is 2, the number of neutrons in He-4 is also 2.
What has 2 electrons and 2 protons?
The atomic number of an element tells us that atom's number of protons. If the atom is neutral, its number of protons is going to equal its number of electrons. Thus, we need only find the element with the atomic number of 2, which is helium.
