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How does Cl2 having valency 0 react with H2 also having valency 0 to form HCl with covalent bond?
Wiki User
∙ 11y ago
Valency relates to atoms not molecules. A valency of one means that an atom can form one bond. Chlorine has 7 electrons in its outer shell, so forming one bond achieves the octet, so it is said to have has a valency of one. In Cl2 there is a single bond. Hydrogen has just one electron in its outer shell so forming a bond gives it a full shell of two like helium, it therefore has a valency of one. In H2 there is a single bond. In HCL there is a single bond.
Valency is an old idea, predating Lewis diagrams, octets, and energy levels. It was the number of hydrogen atoms an elemnt could bond to.
Wiki User
∙ 11y ago
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If the valency of Mn is 2 then how does it react with oxygen to form MnO2?
The valency of mn is also 4
Why carbon compounds form covalent compounds?
This because it has the valency 4 (called tetra valency) by which it can combine with lots of elements and also it has a property of forming stable compounds
What is the valency of phosphate?
PO4 has its valency 3 but, PO3 also has its valency 3
Is nitrogen and bromine ionic?
Nitrogen gas (N2) and bromine liquid (Br2) are covalent. They react with each other to from NBr3 (nitrogen tribromide) which is also covalent.
How is the valency of oxygen two?
Since valency of oxide is 2 which is formed when electrons are gained by oxygen , hence valency of oxygen is also 2
What kind of element most often forms covalent bonds?
Typically the non metals form covalent bonds. Of course some non metals will also form anions when they react with metals. Some metals can also can form covalent bonds however as their electronegativity is low these bonds are often polar covalent
The gas H2X forms discrete covalent molecules. X also forms a covalent compound with fluorine. What would you expect the molecular formula of the fluoride of X to be?
The attachment of two hydrogens with X indicates that the valency of X is 2 ,so the formula for fluoride of X may be XF2.
Why does a chemical sometimes have a roman numeral after the word?
This indicates the valency of the element... for eg:- iron(II) this means that iron has the valency of two in this particular reaction.... but iron also do have the valency three... To create a difference between the iron of valency two... and iron of valency three.. they write the roman numeral..
Why does periodic table show phosphate having valency of 5 yet it is really valency 3?
You have mistaken Phosphate for Phosphorus. Phosphorus is in Group 5 of the periodic table. Group 5 elements generally have a valency of 3, but it is also possible for them to have a valency of 5... Below are two examples of compounds, one using Phosphorus with valency 5 (V) and one using Phosphorus valency 3 (III) : Phosphate (phosphorus with maximum oxygen) This is formed by Phosphorus (V) + 4 Oxygen. Oxygen has valency -2, thus... 5 + 4 x -2 = 5 - 8 = -3 So we can see that Phosphate has a charge of -3 (or in other words a valency of 3) Phosphite (phosphorus with one less than maximum oxygen) This is formed by Phosphorus (III) + 3 Oxygen, and so... 3 + 3 x -2 = 3 - 6 = -3 So we can see that Phosphite also has a valency of 3 Hope this helps!
How do you learn symbols and valencies?
You need to learn the symbols for the elements I am afraid. Start using a Periodic table (see the links below).You could also learn the valencies but if you know the periodic table and understand why elements appear where they do, you can work out the likely valencies from the positions of the elements in the table - they are where they are for a reason!You must ask your chemistry teacher to explain this reasoning to you - it should form part of your lessons.This will helpGroup number 1 = Valency 1group number 2 = valency 2group number 3 = valency 3group number 4 = valency 4group number 5 = valency 3group number 6 = valency 2group number 7 = valency 1group number 8 = valency 0 (noble gases, nonreactive)
How do you find the valency of each element in Fe3O4?
This is an especially complicated valency problem, because Fe3O4 is a combination of Fe2O3 and FeO. As usual, except in peroxides and superoxides, oxygen is assigned a valency of -2. This means that the iron in Fe2O3 has a valency of +3 while the iron in FeO has a valency of +2. (Note that these two oxides of iron also occur separately from each other, as well as in Fe3O4.) Therefore, the average valency of iron in Fe3O4 is 8/3, a rare example of fractional valency made possible only by the fact that iron in this compound actually exists in two integral valence states in the same compound.
Is glucose okay for cat?
It will not harm a cat, but also he cannot taste it, having no taste buds that react to sweetness as far as we know.
