3: For periodic columns 1 through 3, the number of valence electrons is the same as the number of the periodic column.
The expected number of valence electrons for a group 3 A element is 5 number of valence electrons.
All elements in the same A group will have the same number of valence electrons.
The Group Number of the Element you're working on determines the number of Valence Electrons. Valence electrons are electrons in the outside energy level.
In s and p blocks the number of valence electrons in an element is the same number of the group which that element belongs to. Hope this helps....
Valence electrons describe the number of available electrons for bonding. The group number describes outermost electron. The elements in same group has same valence electrons.The number of electrons available for bonding are the valence electrons. In an element, the group number is equal to the number of valence electrons. So the number of electrons available for bonding can be identified by the group number.
Group number describes the number of valence electrons. It helps in estimating chemical properties of that element.For example-group-1 elements have 1 valence electronThe group number of an element is equal to the number of valence electrons. The number of valence electrons is responsible for the chemical properties. So the chemical properties of the element can be determined by the group number.
The number of valence electrons in any element can be found from the element's group number on the periodic table. Phosphorus has a group number of 5 (15 in some periodic tables, in which case the valence is the group number minus ten). Thus, phosphorus has 5 valence electrons.
The number of valence electrons tell us the group number of that element.
Same as the group number.
group #
For the group 1 and 2 elements, the group number is the number of valence electrons. For groups 13 - 18, subtract 10 from the group number to get the number of valence electrons.
the valence electrons cause the chemical reations. the valence electrons decide that element attract to which element.