What do you mean by multiple valency?

Metals donate electrons from their valence shell so as to form positively charged ions such that the charge on the ion is equal to its electropositive valency. In such a situation the element exhibits more than one valency (variable valency).

Which of the following group of elements show more than one valency?

In the formation of ferrous oxide, iron exhibits a valency of +2, whereas in ferric oxide, it has a valency of +3. This is termed variable valency. Hence, Iron valency shows variable valency. Therefore, option A is the required answer.

Which element has more valency?

Sulphur
As it belongs to the VI Periodic Table group, Sulphur has six valence electrons. It thus has maximum valency.

What is the element name of Z?

Zirconium – Element information, properties and uses | Periodic Table.

What is valency if Z 4 What is the valency of the element?

By z=4,we mean that the atomic number(z) of element is 4. Its electronic configuration is 2,2. Hence, the valency of this electron is 2 since the outermost shell has only two electron. Therefore, the element with z= 4 is Beryllium(Be)..

Which type of elements show variable valency?

Variable valency is shown by elements like Iron, mercury, and copper. Transition elements show variable valency. For example: in some cases, iron shows a valency of 2 like ferrous sulphate (FeSO4), and in some, it shows valency of 3 like ferric chloride (FeCl3). Copper shows two types of valencies 1 and 2.

Why do some elements show variable valency?

Some elements show variable valency because of the different electronic configurations. An atom of an element can sometimes lose more electrons than are present in its valence shell i.e. loss from the penultimate shell and hence exhibit more than 1 or variable valency. The reason behind Why they…

Can an atom have more than one valency?

An atom of an element can sometimes lose more electrons than are present in its valence shell, i.e. Loss from penultimate shell, and hence exhibit more than one or variable valency. Eg: 1. Cu 1+ & Cu 2+

Why do some metals have more than one electropositive valency?

Normally, the metals donate electrons from their valence shell, so as to form positively charged ions. However, some metals lose electrons from the shell next to the valence shell. In such a situation the element exhibits more than one electropositive valency.

Why do elements have different valence electrons in each group?

It is from the nature of the element itself. For that reason, elements are grouped into the following: 1A, 2A, 3A, 4A, 5A, 6A, 7A, and 8A group. Elements in group 1A have one valence electron, 2A have two valence electrons, etc. Elements are only stable when they have eight valence electrons.