What is meant by electronic configuration chemistry?

Electronic configuration is the arrangement of electrons around the nucleus of a particular atom or molecule. An atom is made of tiny particles called protons, neutrons, and electrons. A neutral atom has the same number of protons and elections.

What is electron configuration in simple words?

An electron configuration is the arrangement of electrons within an atom. The electron configuration describes where the electrons are inside orbitals. The structure of the Periodic table of elements is partly based on electron configuration.

What are the 4 types of electron configuration?

The four different types of orbitals (s,p,d, and f) have different shapes, and one orbital can hold a maximum of two electrons. The p, d, and f orbitals have different sublevels, thus can hold more electrons. As stated, the electron configuration of each element is unique to its position on the periodic table.

What is electronic configuration in chemistry class 11?

Electronic configuration is defined as the distribution of electrons into various orbitals of an atom by using three principles. Aufbau principle states that in the ground state of the atoms the orbitals are filled in order of their increasing energies.

Why electron configuration is important?

A short and simplified answer: The electronic configuration of an atom determines the chemical reactions the atom can participate in, and determines the kinds of molecules that atoms can combine into to form more complicated substances.

What is the rule of electronic configuration?

That is, we follow the three important rules: Aufbau Principle, Pauli-exclusion Principle, and Hund’s Rule. The electronic configuration of cations is assigned by removing electrons first in the outermost p orbital, followed by the s orbital and finally the d orbitals (if any more electrons need to be removed).

How do you remember the electron configuration?

1s, 2s, 2p, 3s, 3p, 4s, 3d, 4p, 5s, 4d, 5p, 6s, 4f, 5d, 6p, 7s, 5f, 6d, 7p, 8s. Although this looks confusing, there is an easy way to remember. Go in order of the lines from top to bottom, top right end to bottom left of each line.

How do you draw electron configuration?

  1. Find the element on the periodic table.
  2. Draw a small circle and write the symbol in the centre.
  3. Draw a circle around the nucleus.
  4. Add up to two electrons to the first electron shell.
  5. Draw another circle around the first shell.
  6. Add up to eight electrons to the second shell.

Who discovered electron configuration?

Electron configuration was first conceived under the Bohr model of the atom, and it is still common to speak of shells and subshells despite the advances in understanding of the quantum-mechanical nature of electrons.

What is the full form of SPDF?

The spdf stands for sharp, principal, diffuse, and fundamental respectively. These letters are used as the visual impression to describe the fine structure of the spectral lines that occurs due to the spin orbital interaction.

What is 1s 2s 2p 3s 3p?

1s 2s 2p 3s 3p represents the electron orbital energy levels.

What is the value of SPDF?

The values of the azimuthal quantum numbers for the s, p, d, and f subshells are 0, 1, 2, and 3 respectively. The s subshell can hold a total of 2 electrons, the p subshell can hold 6, the d subshell can hold 10, and the f subshell can hold a total of 14 electrons. Was this answer helpful?

What are the 4 quantum numbers?

In atoms, there are a total of four quantum numbers: the principal quantum number (n), the orbital angular momentum quantum number (l), the magnetic quantum number (ml), and the electron spin quantum number (ms).

What is 1s 2s 2p in chemistry?

Answer. Sodium (Na) is the first element in the 3rd row (Period 3) in the periodic table. This means that the first shell and second shells of Na atom are filled to the maximum number of electrons. The first shell (1s) is filled with 2 electrons. The second shell (2s and 2p) has a total of 8 electrons.

What are the Subshells?

A subshell is a subdivision of electron shells separated by electron orbitals. Subshells are labelled s, p, d, and f in an electron configuration.

What is the rule of orbitals?

Hund’s rule states that: Every orbital in a sublevel is singly occupied before any orbital is doubly occupied. All of the electrons in singly occupied orbitals have the same spin (to maximize total spin).

What is hands rule in chemistry?

Hund’s Rule. Hund’s rule: every orbital in a subshell is singly occupied with one electron before any one orbital is doubly occupied, and all electrons in singly occupied orbitals have the same spin.

What is electron number?

The number of electrons in a neutral atom is equal to the number of protons. The number of protons in the nucleus of the atom is equal to the atomic number (Z). The number of neutrons is equal to the difference between the mass number of the atom (M) and the atomic number (Z).

Who named electron?

(The term “electron” was coined in 1891 by G. Johnstone Stoney to denote the unit of charge found in experiments that passed electrical current through chemicals; it was Irish physicist George Francis Fitzgerald who suggested in 1897 that the term be applied to Thomson’s corpuscles.)

Why are orbitals called KLMN?

Later these energiers were named with different alphabets. He noticed that K type X-rays emitted the highest energy. Therefore, he named the innermost shell as the K shell.

What is difference between KLMN and SPDF?

The difference between the KLMN and SPDF is K denotes the first shell or energy level, L the second shell, M, the third shell, and so on. In other words, the KLMN notation only indicates the number of electrons an atom has with each principal quantum number. The SPDF notation subdivides each shell into its subshells.

What is the shape of f subshell?

There is no discrete shape in the f-subshell. This is because of the complexity of its nature. Therefore the answer would be option D, No definite shape. Note: Although we generally study uptil the f-subshell but that doesn’t mean that it is the last subshell.

What does 3p mean in chemistry?

In the question 1s 2s 2p 3s 3p represents electron orbital energy levels. These orbital energy levels depend on 2 quantum numbers-Principal quantum number (n) and Azimuthal quantum number(l) . Principal quantum number describe the electronic shell of an atom.

How many electrons are in a 2p orbital?

Each orbital can accommodate a maximum number of 2 electrons. So, the maximum number of electrons allowed in a 2p orbital is 2.

How many electrons are in 2s?

The 2s subshell holds a maximum of 2 electrons, and the 2p subshell holds a maximum of 6 electrons.

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