In iron trichloride the valence of iron is +3 and the valence of chlorine -1.
Valency is the number of electrons to reach the stable number of 8 electrons in its outer shell. Electrically neutral chlorine has 7 electrons its outermost shell. This means that a single bond, where two electron orbitals overlap is required to form the stable element allotrope, therefore two atoms of chlorine are needed.
"Hydrogen has +1 valency and chlorine has -1 valency. So, they share a single electron and form a single covalent bondbetween them. "Chlorine is -1, meaning it has one extra electron. Hydrogen is +1, meaning it requires one electron to fill its valence (if only) shell. therefore HCl is an ionic bond where hydrogen is stealing one electron from chlorine.
Copper Chloride
Because it has 7 electrons in its outermost (valency) shell and getting 8 electrons there would close the shell.
Negative.
This is Cl, chlorine, with multiple valency values: -1, +1, +3, +5, +7
i think 4 is the valency of tetrachloride
In iron trichloride the valence of iron is +3 and the valence of chlorine -1.
Both have one electron vacancy in their valency orbital.
I want answer
Look in the periodic table at groups; sodium has the valence +1, magnesium +2 and chlorine -1.
Sometimes yes ... sometimes no. Valency of chlorine is 7 ... it has 7 valence electrons. But its most common oxidation number is -1.
Since chlorine has a valency of 1 only, it can bond only wit one atom at a time
actually valency is the combining capacity of atoms so to attain stable configuracy the lose or gain electrons for example chlorine has configuration of 2,8,1 so in order to attain stable configuracy they lose 1 electron.THIS is why we say chlorine has -1 as valency
Valency is the number of electrons to reach the stable number of 8 electrons in its outer shell. Electrically neutral chlorine has 7 electrons its outermost shell. This means that a single bond, where two electron orbitals overlap is required to form the stable element allotrope, therefore two atoms of chlorine are needed.
AlCl3 is the correct formula as the valency of aluminium and chlorine are 3 and 1 respectively.