The identity of an atom is based on its atomic number, so a change in the number of protons mean an atom has turned into a different element. However, an addition or subtraction of neutrons creates different isotopes of an element, and a change in the number of electrons creates an ion of the element.
valence electrons. or electrons
An element's atomic number gives its number of protons. Lutetium's atomic number is 71. Thus, it has 71 protons.
The Higgs Boson was discovered in July of 2012. The media calls it "The God Particle", but this is a misnomer; there is nothing godlike about this particle. It's the particle counterpart to the field that gives particles their mass.
Argon's atomic number is 18. thus, it has 18 protons and 18 electrons. Filling in the first 18 electron orbitals gives the configuration of 1s2 2s2 2p6 3s2 3p6. Thus, argon has 3 electron energy levels.
Manganese's atomic number is 25. Thus it has 25 electrons. Filling in the first 25 orbitals gives the electron configuration of s2 2s2 2p6 3s2 3p6 4s2 3d5.
It's important because it's the particle that gives everything mass (kinda like weight) in Physics. If this particle doesn't exist, it means that all of the science we have relied on so far in Physics, is wrong. This includes Einstein's General Theory of Relativity, or the greatest work Einstein is known for (E=mc2). That's why it's important.
The atomic number is determined by the number of protons, which are located in the nucleus.
The number of protons is unique for every element.Varying the number of neutrons will give you an isotope of the same element.Varying the number of electrons will give you an ion of the same element.
This is the proton.
This is the proton.
There is no individual sub-atomic particle that is responsible for the identity of an element. It is the way the electrons, protons and (neutrons) are arranged in an element that gives it it's identity.
The proton (which is positive).
protons and neutrons are subatomic particles and adding the two amounts together gives you the atomic mass unit
An alpha particle, which is the nucleus of a helium atom.
The total of number of protons in the nucleas gives you the atomic number.
The number of protons in the nucleus of an element gives that element its ATOMIC NUMBER.
Atomic Number It is thre position of the atom in the periodic table. It is the number of protons in the neucleud. It is the number of electrons in the neutally charged atoms. Atomic MASS it the total of the protons and neutrons in the atom.
It gives the number of neutrons in the particular atom.