Gould stien discovered the proton during discharge tube experiment and Chadwik discovered the neutron during the experiment about artificial radioactivity.
Atoms all have a similar structure - they have a nucleus surrounded by one or more electrons. Each nucleus is made of protons and neutrons. All atoms of a particular element all have the same number of protons and electrons, and usually have the same number of neutrons too (although sometimes these differ) in all their atoms. Different elements have different amounts of these fundamental particles in their atoms. The first few elements (in terms of numbers of protons starting with 1, 2 3 etc) have numbers of protons, neutrons and electrons as follows: Hydrogen: 1 proton and 0 neutrons in the nucleus and 1 electron in orbit around it. Helium: 2 protons and 2 neutrons in the nucleus and 2 electrons in orbit around it. Lithium: 3 protons and 4 neutrons in the nucleus and 3 electrons in orbit around it. Beryllium: 4 protons and 5 neutrons in the nucleus and 4 electrons in orbit around it. Boron: 5 protons and 5 neutrons in the nucleus and 5 electrons in orbit around it. Carbon: 6 protons and 6 neutrons in the nucleus and 6 electrons in orbit around it. Nitrogen: 7 protons and 7 neutrons in the nucleus and 7 electrons in orbit around it. Oxygen: 8 protons and 8 neutrons in the nucleus and 8 electrons in orbit around it. So, the only difference between any of the elements e.g. oxygen and nitrogen is the number of particles in the atoms of each gas. Just as the words 'GOD' and 'DOG' represent totally different things despite being made of the same letters, all the elements in the universe from hydrogen to iron, from gold to tin are all different, look different, behave differently and so on, simply because, in their atoms they have different numbers of the fundamental particles, protons, neutrons and electrons.
Protons and neutrons can be found in the centre of the atom in the nucleus. Electrons orbit round the nucleus in shells/orbits and are extremely small compared to the rest of the atom. Protons have a positive +1 charge and neutrons have no charge and are neutral. Electrons have a negative -1 charge. Protons and neutrons give the atom its mass. Each shell has a maximum number of electrons it can take. In the first shell it is 2. In all other shells (up to calcium) the maximum number is 8. An atom can gain or lose electrons, becoming what is known as an ion. An ion is nothing more than an electrically charged atom. Adding or removing electrons from an atom does not change which element it is, just its charge. The number of electrons equals the number of protons. The number of protons is the roton/atomic number. The number of neutrons can be found by subtracting the atomic mass from the atomic number (as the atomic mass it both the protons and neutrons combined.)
First, you figure out how many protons and neutrons Radon-222 has. Find the atomic number - that's the number of protons. Subtract that from 222 to get the number of neutrons.From that, you subtract an alpha particle - i.e., 2 protons and 2 neutrons. Use the number of protons to look up the element. Add protons and neutrons to get the isotope number. As an alternative, since you don't really need the number of neutrons, you can just subtract 2 protons, and a total of 4 nucleids from the parent nucleus.
The symbol for an alpha particle is 24He2+. The first 2 means that there are 2 protons. The second 2+ means that the net charge is +2, which means, since there are 2 protons, that there are no electrons. The result is that an alpha particle is a helium nucleus without its electrons, i.e. 2 protons and 2 neutrons, but no electrons.
The element uranium (U) has 92 protons in its nucleus. That's where its atomic number comes from. When we see an isotope of an element written in "standard" form, the element name or symbol will be followed by the atomic mass (atomic weight) of the isotope. This number is basically the number of protons and neutrons (called nucleons when they are in an atomic nucleus) in an atom. In this case, we have U-235 and U-238. In the first case, 235 - 92 = 143, so U-235 has 143 neutrons. In the second case, 238 - 92 = 146, so U-238 has 146 neutrons. See the Related Questions below for how to find the number of neutrons in any atom.
Neon, with an atomic number of 10, and an atomic mass of roughly 20, will require 10 protons, neutrons, and electrons. The protons and neutrons will be inside the nucleus, or the center of the atom. The electrons will be outside the nucleus in the electron cloud, where a first ring or level will hold 2 and the second will hold 8.
There's the nucleus in the middle, and then an electron cloud surrounding it. there are different levels to the cloud. 2 electrons can fit in the first level, 8 in the second, and there's more in the link below. Electrons are negatively charged. In the nucleus, there are protons and neutrons. Neutrons are neutral, and protons are positively charged. There are the same amount of protons as electrons. If there is a different amount of neutrons than protons, the atom is called an isotope. I have a link of an image that explains some of this (see Related Link below).
Atoms all have a similar structure - they have a nucleus surrounded by one or more electrons. Each nucleus is made of protons and neutrons. All atoms of a particular element all have the same number of protons and electrons, and usually have the same number of neutrons too (although sometimes these differ) in all their atoms. Different elements have different amounts of these fundamental particles in their atoms. The first few elements (in terms of numbers of protons starting with 1, 2 3 etc) have numbers of protons, neutrons and electrons as follows: Hydrogen: 1 proton and 0 neutrons in the nucleus and 1 electron in orbit around it. Helium: 2 protons and 2 neutrons in the nucleus and 2 electrons in orbit around it. Lithium: 3 protons and 4 neutrons in the nucleus and 3 electrons in orbit around it. Beryllium: 4 protons and 5 neutrons in the nucleus and 4 electrons in orbit around it. Boron: 5 protons and 5 neutrons in the nucleus and 5 electrons in orbit around it. Carbon: 6 protons and 6 neutrons in the nucleus and 6 electrons in orbit around it. Nitrogen: 7 protons and 7 neutrons in the nucleus and 7 electrons in orbit around it. Oxygen: 8 protons and 8 neutrons in the nucleus and 8 electrons in orbit around it. So, the only difference between any of the elements e.g. oxygen and nitrogen is the number of particles in the atoms of each gas. Just as the words 'GOD' and 'DOG' represent totally different things despite being made of the same letters, all the elements in the universe from hydrogen to iron, from gold to tin are all different, look different, behave differently and so on, simply because, in their atoms they have different numbers of the fundamental particles, protons, neutrons and electrons.
The mass of proton is 1.The charge of proton is positive.The mass of neutron is 1.The charge of neutron is neutral.Protons and Neutrons are found in the Nucleus of an Atom.
Protons and neutrons can be found in the centre of the atom in the nucleus. Electrons orbit round the nucleus in shells/orbits and are extremely small compared to the rest of the atom. Protons have a positive +1 charge and neutrons have no charge and are neutral. Electrons have a negative -1 charge. Protons and neutrons give the atom its mass. Each shell has a maximum number of electrons it can take. In the first shell it is 2. In all other shells (up to calcium) the maximum number is 8. An atom can gain or lose electrons, becoming what is known as an ion. An ion is nothing more than an electrically charged atom. Adding or removing electrons from an atom does not change which element it is, just its charge. The number of electrons equals the number of protons. The number of protons is the roton/atomic number. The number of neutrons can be found by subtracting the atomic mass from the atomic number (as the atomic mass it both the protons and neutrons combined.)
The atom is composed of a nucleus surrounded by electrons (negative charge)rotating in orbits around the nucleus. The nucleus is composed of protons (positive charge) and neutrons (neutral charge). so the three main subatomic particles are: * Electrons in orbits around the nucleus of the atom * Protons (positively charged particles) in the nucleus * neutrons (neutrally charged particles) in the nucleus. Except for hydrogen that is having no neutrons.
There's the nucleus in the middle, and then an electron cloud surrounding it. there are different levels to the cloud. 2 electrons can fit in the first level, 8 in the second, and there's more in the link below. Electrons are negatively charged. In the nucleus, there are protons and neutrons. Neutrons are neutral, and protons are positively charged. There are the same amount of protons as electrons. If there is a different amount of neutrons than protons, the atom is called an isotope
You put the number of protons and neutrons in the middle of the first circle (nucleus). The number of protons and electrons is the Atomic number. Round the atomic mass and subtract it by the number of protons and you have your neutrons. Draw another circle (shell) around the first one. You can only put up to two electrons in the first one. The next two circles you draw can hold up to 8. The last shell can hold 18. EG: Neon There are ten protons, neutrons and electrons. Draw the nucleus first, then write the number of protons and neutrons inside. Draw a shell around the nucleus and place two electrons side by side. Draw another shell around the first one and draw eight electrons around it.
An atom's nucleus contains two types of particles. The first is protons, which carry a negative charge. The second type of particle is the neutron, which has a neutral charge. These two particles are about equal in mass.
The two Subatomic particles which are in the Nucleus of an Atom is the Up and Down quark. When we think about the Nucleus of an Atom it is made up with Neutrons and Protons. Both Neutrons and Protons are made up with Quarks (a type of Subatomic Particle) Neutrons have to Down quarks and one Up quark. Whilst Protons have two Up quarks and one Down quark. So we can see that the Nucleus of an Atom is not only made up but dependent on Up and Down quarks.This should answer the Question.
This is the "mass number" of the atom, indicating relative mass of an isotope.For example uranium-235 (235U) is a lighter atom than uranium-238 (238U) because while both isotopes have 92 protons (the atomic number), the first has 3 fewer neutrons.
An isotope of Neon.