0
Group number 1 = Valency 1+
group number 2 = valency 2+
group number 3 = valency 3+
group number 4 = valency 4+ and 4- (some cases) group number 5 = valency 3-
group number 6 = valency 2-
group number 7 = valency 1-
group number 8 = valency 0
For the transition elements they will either state Copper (III) Sulphate or it will be like Cu2(SO4)3
You can find the valency by the base of sulphate and you know its positive because metals are always positive and are written in the left.
Source: I am a GCE O Level Sciences Student (O2)
Wiki User
∙ 14y ago
Wiki User
∙ 13y agothe number of electrons present in the last shell is called valency of the element......... for example Na (sodium), atomic number 11,
It's Electronic configuration is K=2 , L=8 M=1 thus its valency is 1
Add your answer:
Earn +20 pts
What is the valency of 31st element?
2,8,18,3
What is the valency of the last element in the 3rd group of modern periodic table?
The valency is 3+
What is valency of 17 element?
This is Cl, chlorine, with multiple valency values: -1, +1, +3, +5, +7
What is valency number for NH4?
The valency of Ammonium (NH4) is +1.
What elements in an element family have similar?
Valency
What is the valency of the smallest element?
the smallest element is hydrogen of which its valency is one.
What is the valency of an element sodium chloride?
the valency of element sodium chloride is 1
How do you find valency?
The valency of an element measures its ability to combine with other elements. This valency is determined by the number of electrons in the outer shell of each atom of an element.
How do you find out valency of manganese?
Manganese is a transition element and has a variable valency but generally has a valency of 2 and exists as Mn2+
What is the meaning of valency?
Valency (in chemistry) is the number of the valence bonds of a chemical element.
What is the valency of 31st element?
2,8,18,3
What is the valency of elements?
The valency of an element is the number of electrons an atom of that element wants to gain, lose or share in order to be chemically stable.
What is the valency of the last element in the 3rd group of modern periodic table?
The valency is 3+
How calculate valency?
Valency is calculated in this way... 1. Find atm no of that element. 2. Write down electronic configuration. 3. Take the valence shell electron number. 4. The number of electrons to be lost are added as the valency.
Which element has 4 and 6 valency?
Sulphur
What is bivalent ions?
an element which has valency 2
Which element has least valency?
The noble gases have the least valency which is zero. It is because thay have a complete shells.
