Q1. What is electronic configuration? 2. What does the presence of the number of electrons in the outermost shell signifies? 3. If an element is having 8 electrons in its valence shell, what could be its valency and its group number? 4.Write the electronic configurations of following elements: a. Sodium b. Chlorine c.Calcium d.Argon e.Magnesium
Answers
Answer:
Explanation:
In atomic physics and quantum chemistry, the electron configuration is the distribution of electrons of an atom or molecule in atomic or molecular orbitals.
The number of electrons in the outermost subshell determines the atom's chemical properties, since it is these electrons that are farthest from the nucleus and thus interact most with other atoms. If the outermost subshell can accept or give up an electron easily, then the atom will be highly reactive chemically.
What is octet rule would it be possible for an atom to achieve more than eight valence electrons?
Most of the elements important in biology need eight electrons in their outermost shell in order to be stable, and this rule of thumb is known as the octet rule. Some atoms can be stable with an octet even though their valence shell is the 3n shell, which can hold up to 18 electrons.
The electronic configuration of sodium ion becomes 2,8 on losing one electron.
Therefore the Magnesium electron configuration will be 1s22s22p63s2.
Therefore the Chlorine electron configuration will be 1s22s22p63s23p5. The configuration notation provides an easy way for scientists to write and communicate how electrons are arranged around the nucleus of an atom.
Therefore the Calcium electron configuration will be 1s22s22p63s23p64s2. The configuration notation provides an easy way for scientists to write and communicate how electrons are arranged around the nucleus of an atom. This makes it easier to understand and predict how atoms will interact to form chemical bonds.
[Ne] 3s² 3p⁶
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