The sodium atom has 1 electron in its outermost shell. When forming an ion it donates this electron giving it an overall charge of +1 (having lost a negative charge).
Chlorine atoms have 7 electrons in their outermost shells. When forming an ion these are more likely to take an electron from another atom to form a complete octet (gaining a negative charge) thus it becomes -1.
Both atoms will gain or loose 1 electron, hence why they have the same valency, however the electrovalency depends on whether this charge becomes positive or negative. Hope this helps!
Sodium (Na) typically has a valency of +1 because it has one electron in its outer shell, which it tends to lose to achieve a stable electron configuration. In a NaCl crystal, sodium loses one electron to chlorine (Cl), which has a valency of -1, resulting in an overall neutral compound with a 1:1 ratio of Na and Cl ions.
-1 hco3-1 all bases are - and most if not all the ones with hydrogen in front are -1 for example- hydrogen sulfate (hso4-1)or hydroxide (oh-1)
The valency of sulfur is 2-. The valency of sulfur is 2-. The valency of sulfur (S) is +2
-1 valency
The valency of sodium in sodium sulfate is +1, while the valency of sulfate is -2. Therefore, the valency of sodium sulfate as a whole is +2.
Symbol: Cl-Valency: -1.
Sodium chloride is composed of sodium (Na) and chlorine (Cl). Sodium has a valency of +1, while chlorine has a valency of -1. In sodium chloride, sodium donates its electron to chlorine, forming an ionic bond with a valency of +1 for sodium and -1 for chlorine.
single valency. last orbit has 7 electrons.
Copper Chloride
The valency of a chloride ion in a chlorine molecule is -1. Each chloride ion gains one electron to fill its outer shell and achieve a stable electron configuration.
The valency of potassium ion (K+) is +1, zinc ion (Zn2+) is +2, and chloride ion (Cl-) is -1. Valency represents the combining power of an element in a compound, based on its ability to gain, lose, or share electrons.
The valency of silver is typically +1. However, silver can also exhibit a valency of +2 in certain compounds.
we usually use roman numerals in writing names of compounds of transitional elements which have more than one valency . for example we have two compounds of iron chloride , iron(II)chloride and iron(III)chloride depending on the valency of iron in each compound.
Their valency is one. They both belongs to the third period.
AgCl It always has a valency of +1, though it is a transition metal
The correct formula is AlCl3
The valency of a barium ion is +2. Barium chloride (BaCl2) consists of a barium ion (Ba^2+) and two chloride ions (Cl^-), which gives the overall compound a neutral charge.