atomic number
3
Li
6 <<< Atomic Number
Atomic number represents the number of protons in the nucleus of an atom, which also equals the number of electrons outside the nucleus.
Electrons are on the outside rings of an atom. neutrons and protons are together in the nucleus of the atom. There is always the same number of protons and electrons in an atom, equal to the atomic number of the element. The amount of neutrons varies, even between atoms of the same number, these varieties of an element are called isotopes. If the amount of protons and electrons varies, it is called an ion, and the chemical number is still equal to the amount of protons.
The correct grammar is 'What is an atom made of?', and the answer is that the nucleus is surrounded by Neutrons (no charge) and Protons (positive charge), and outside the nucleus are outer rings with Electrons (negative charge) on them. The amount of subparticles depends on the atom.
Protons, neutrons, and electrons can form any type of atom on the Periodic Table of Elements.The amount of protons determine what type of element an atom is.If the number of neutrons differ from the stable amount it should have, the atom is known as an isotope.If the amount of electrons differ from the amount of protons, the atom is known as an ion.
The atomic number of an element is how many protons and electrons (you must have the same amount of protons as electrons) an element has in it's nucleus. The Atomic number= number of protons= number of electrons.
A lemon has no overall charge, so it has the same number of electrons as protons in its nucleus, which is approximately 5x10^26.
Mass of oxygen or any atom is mostly tied up in the nucleus and largely attributed to neutrons and protons. A smaller amount of mass is contributed by electrons in orbitals outside the nucleus.
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).
Protons and neutrons are contained within the nucleus of an atom. The nucleus is located at the center of the atom and it is where most of the atom's mass is concentrated. Electrons, which are negatively charged particles, orbit around the nucleus in electron shells.
To find out the number of electrons in an element you must add the protons and neutrons and subtract that number with the atomic mass, this will determine the amount of electrons because the unknown element could be an isotope and have more than the normal amount of electrons of the non isotope element.
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 number 79 means that there are 79 protons in the nucleus of an atom of gold. It is the number of protons/electrons in that atom (I say protons/electrons because there are an equal amount of both; i.e. 79 protons 79 electrons)