VALENCY TABLE FOR CLASS 7
Answers
Answer:
H - hydrogen , He - helium, Li - lithium
Answer:
Concept:
In chemistry, valence, sometimes called valency, is a characteristic of an element that establishes how many other atoms of the element each atom can interact with. The phrase, which was first used in 1868, is used to represent both the broad capability of combination of an element and its numerical value.
Explanation:
Combining the strength of an element or radical results in value. The list of valencies for the element is contained in the valency chart. The number of electrons that an atom needs lose or gain in order to achieve a stable electron configuration is known as the valency of an element, which serves as a gauge of that element's potential for combining.
Below are a few examples of elements together with their valencies' values. Let's use the examples that follow to understand the valency.
- Copper is a transitional material. The majority of the transitional components have variable valences. There are two valences in copper, 1 and 2. Copper is classified as Cuprous, or Cu(I), when it exhibits valency 1, and Cupric, or Cu(II), when it exhibits valency 2.
- Nitrogen has an atomic number of 7. It has a 2, 5 electronic configuration. The number of electrons in nitrogen's outermost shell is five, as is evident. Nitrogen requires 3 additional electrons to complete its octet. It'll achieve stability once it has finished its octet. Consequently, nitrogen has a valency of 3.
- Sodium has an atomic number of 11. 2, 8, 1 make up its electronic configuration. So it is evident that for sodium to become stable by completing its octet, it must lose one electron. Its valency is therefore 1.
- Fluorine has an atomic number of 9. It has a 2,7 electronic configuration. In order to complete its octet and achieve stability, it needs one electron. Its valency therefore is 1.
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