Explaining Important Statements of Atomic Structure Provided In IB Chemistry
After years of experiments conducted by multiple chemists, the correct atomic structure became available. An atom contains electron, proton, and neutrons as the subatomic particles. All three particles have their certain place and role in the atom, which describes the structure of an atom.
The expert tuition teachers for ib explain every statement in such a manner that it becomes a part of your common understanding. And that kind of learning is required for IB chemistry.
Here, in this article, you will find the explanation of all the important statements associated with the atomic structure provided in IB chemistry.
- “Most of the atomic mass lies in the centre.”
By atomic mass, the statement means the neutrons and the protons. The neutrons and the protons are the particles that contain almost the whole mass of an atom. And the location of the protons and neutrons is in the centre of the atom. The protons and neutrons stay densely packed in a small centre that is called the nucleus. And the particles of the nucleus are called the nucleons.
- “The negative charge revolves outside the nucleus.”
In an atom, the electrons carry the negative charge. And as the protons carry the positive charge, electrons can’t stay inside the nucleus. The structure of an atom includes a certain number of electrons that revolve in different shells outside the nucleus. The number of electrons in an atom balances the number of protons in the case when the atom has no charge.
- “The energy of an electron is decided by its position.”
The electrons revolve around the nucleus bound by the attraction force of the protons. This attractive force decides the energy level of the electrons. The more attraction means the lesser amount of independent energy of the electrons. Hence, an electron that is farther from the nucleus as compared to other contains more energy. This is how the energy levels of the shells are decided outside the nucleus.
- “An electron always finds the most stable place to occupy in an atom”
Different energy levels contain sub-levels that provide the place for the electron to occupy a space. According to the rule of electronic configuration, an electron always chooses the best space to occupy in terms of energy stability. When choosing a sub-orbital, an electron always chooses the one with the highest available energy. This is the reason why the opposite spin electrons appear only after all the orbitals get occupied.
- “The number of orbitals is fixed.”
The orbitals have a fixed number of different energy levels. The reason behind this is the necessity of finding the balance between the energy and charges in the nucleus and the energy that binds the electrons in different energy levels. Every electron takes its place in the orbital in such a manner that its energy gets balanced.
So, that is all about the atomic structure. Hopefully, now you are clearer about the mentioned statements. However, it would be good to discuss your confusions with one of the experienced ib chemistry tutors in Gurgaon.