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The Periodic Table is a good reference - check out the atomic number !
Helium - 2 protons, Nitrogen - 7 protons
What else can I help you with?
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.
Why is helium lighter than nitrogen?
Your question is wrong because hydrogen is the lightest gas but other than that its the lightest nobel gas, and that's just cause its atoms don't have much to them, and neither dose its molecules. With an atomic mass of 2, its the second lightest substance there is, and therefore attracted by gravity the second least of anything, so its gonna be ontop of all other matter (exept hydrogen which has the atomic mass of one)
Helium-4 and helium-3 are?
isotopes of helium, with helium-4 being the more common isotope found in nature. Helium-4 has two protons and two neutrons in its nucleus, while helium-3 has two protons and one neutron. Both isotopes have important applications in various fields, including cryogenics and nuclear research.
How is the molecular formula NO different from the molecular formula N2O?
The molecular formula NO represents a single nitrogen atom bonded to an oxygen atom, while the molecular formula N2O represents two nitrogen atoms bonded to one oxygen atom. Thus, the composition and arrangement of atoms in the two molecules differ.
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.
How many protons neutrons and electrons does nitrogen have have?
According to Wikipedia neutral nitrogen has 7 protons, 7 neutrons, and 7 electrons. Nitrogen ions may have more or less electrons and other nitrogen isotopes may have more or fewer neutorns.
How many positive protons does helium have in its nucleus?
Helium has 2 positive protons in its nucleus.
How many protons and electrons does the element Helium have?
One atom of helium contains 2 protons and 2 electrons. The most abundant isotope of helium, helium-4, has 2 neutrons. The other, rare isotope of helium, helium-3, has 1 neutron. (Source: Wikipedia)
Is oxygen and nitrogen has same numbers of protons?
Oxygen has 8 protons and Nitrogen has 7 protons the atomic number of an element which tell you how many protons an atom has is the lower one seen on each element on the periodic table.
Which is bigger a helium nucleus or helium proton?
The helium nucleus is larger than the proton. The He nucleus consists of two protons, and one (rarely) or two (most commonly) neutrons. (These are He-3 and He-4, respectively.) That would make the helium nucleus a multiple of three or four times the mass of that of a single proton.
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.
Why is the atom of a helium atom unchanged adding one neutron to it?
The number of protons determines the element. So when neutrons are added, there is no change in the number of protons and helium atom is unchanged.
Why is there 7 protons in the nucleus?
because the atom is a nitrogen one....not all atoms have seven protons in their nucleus
Does nitrogen have the fewest protons?
No. Nitrogen has an atomic number of 7, with a mass number of about 14, meaning it has 7 protons, 7 neutrons, and 7 electrons. Hydrogen has the least amount of protons, containing only one proton and one electron.
Is an inert gas and has one more proton than hydrogen?
The gas is helium. Helium is inert and has 2 protons, while hydrogen has 1 proton.
Atomic structure for helium?
Helium has a nucleus with 2 protons, 2 neutrons. It has only one energy level with 2 electrons in it.
What is the atomic number of He?
The atomic number of helium (He) is 2. This means that helium has 2 protons in its nucleus.
