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Quantum Numbers and Atomic Orbitals Each electron in an atom is described by four different quantum numbers (n, l, m l, & m s) 1.Principal Quantum Number (n): Specifies the energy of an electron and the size of the orbital. All orbitals that have the same value of n are said to be in the same shell (level). n takes the values of 1, 2, 3, …, ∞.
The quantum numbers are parameters that describe the distribution of electrons in the atom, and therefore its fundamental nature. They are: 1. PRINCIPAL QUANTUM NUMBER (n) - Represents the main energy level, or shell, occupied by an electron. It is always a positive integer, that is n = 1, 2, 3 ... 2.
contain more than one electron and compare atoms that differ in their numbers of protons in the nucleus and electrons surrounding that nucleus. Much of what we know and can predict about the properties of an atom can be derived from the number and arrangement of its electrons and the
The Principal Quantum Number. The principal quantum number n arises from the solution of the radial part of the Schrödinger equation and describes the principle energy level of the electron. n is an integer that can range from 1 to infinity, with larger n corresponding to higher energy orbital.
Physical Properties. Physical properties of a substance include the boiling point, melting point, solubility and conductivity. These properties are different depending on the type of bonding and the crystal structure of the compound. Substances with an ionic crystal structure have a high melting and boiling point.
To introduce the basic principles of covalent bonding, different types of molecular representations, bond polarity and its role in electronic density distributions, and physical properties of molecules.
Valence electrons – those in unfilled shells. Filled shells more stable. Valence electrons are most available for bonding and tend to control the chemical properties. example: C (atomic number = 6) 1s2. 2s2 2p2.
