What happen when:- a) An electron is removed from the valence shell of an atom? b) An electron is added to the valence shell of an atom? c) Sodium carbonate is heated?
Answers
Answer:
What happen when:- a) An electron is removed from the valence shell of an atom?
answer: Removing an electron (any of them) from a neutral atom turns the atom into an ion. Valence electrons also tend to be the electrons that specifically participate in a chemical bond, like ionic bonds or covalent bonds.
b) An electron is added to the valence shell of an atom?
answer: Electron affinity is defined as the amount of energy released when an electron is added to the valence shell of a gaseous, neutral and isolated atom
c) Sodium carbonate is heated?
answer: When sodium carbonate is heated then its decomposes into sodium oxide and carbon dioxide. Explanation: It is known that when a single compound breaks down into two or more different substances then this type of reaction is known as decomposition reaction.
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Answers are as follows-
a) Removal of electron leads to formation of cation. This usually occurs when there are few electrons in shell next to complete octet.
b) Addition of electron leads to formation of anion. This occurs when few electrons are required for completing octet.
c) Heading to sodium carbonate is decomposition reaction and results in formation of sodium oxide and carbon dioxide.