how well you find the valency if oxygen and nitrogen
Answers
Explanation:
What is the valency of oxygen?
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You have to be careful with terminology here. Oxygen (the atom, not O2 the molecule) has 6 VALANCE (outer shell) electrons. To complete a stable octet it requires a further two. In this case, we use the term VALENCY, oxygen has a valency of -2 (minus 2) because it can acquire 2 elections. However, be aware that for brevity chemists often drop the minus sign completely and simply state that oxygen has a valency of 2. In practical terms, it’s the number of paired election bonds (covalent bonds) that an atom of that element can form with another element. You can also think of it as the number of hydrogen atoms the element can covalently bond with (hydrogen has a valency of +1 because it can donate one election). There are a number of caveats to this simple explanation, but those are the basics. With the similarity in terminology, i.e., valence vs valency, it is unsurprising students get confused.
Answer:
Number Element Valence
6 Carbon (+2), +4
7 Nitrogen -3, -2, -1, (+1), +2, +3, +4, +5
8 Oxygen -2
9 Fluorine -1, (+1)
Explanation:If its Valence electrons are less than 4, then valency is equal to number of valence electrons and if it is more than 4 then valency is obtained by subtracting number of valence electrons from 8. Atomic Number of oxygen is 8. So, electronic Configuration of oxygen= 2, 6.The nitrogen atom has 5 electrons in the outermost shell, so it can accept 3 electrons to fulfil the octet structure. Therefore the valency of nitrogen in NH3 is 3.
The valency of oxygen is -2. This means oxygen needs to gain or share two electrons for stability.