Because groups/families determine how many valence electrons the element will have. Therefore, all the elements in a group/family have the same number of valence electrons
Chemimal and Physical.
the same number of electrons in their outer energy level
they generally have the same number of valance electrons.
The elements in a group have the similar chemical properties dueto presence of same no of electrons in their outermost shell but they differ physically because physical properties are related to their atomic sizes from top to bottom in a group atomic size increases so their physical properties also differ.
Elements of same group have the same number of valence electrons and hence have similar properties.
Elements in the same group have same number of valence electrons. Because of this they generally have similar chemical and physical properties.
Elements in the same group or family share the same number of valence electrons unless it is in groups 4-12 they vary and the have similar properties
Elements with similar physical and chemical properties are located in a group.
family
family
Elements in the same family, or group, have similar physical and chemical properties.
a group of elements that have similar properties are arranged one on top of the other on the periodic table. These groups are also called families
The elements in a group have the similar chemical properties dueto presence of same no of electrons in their outermost shell but they differ physically because physical properties are related to their atomic sizes from top to bottom in a group atomic size increases so their physical properties also differ.
Elements in the same group (column) have the same properties. All the elements in group one have similar properties. All the elements in group two have similar properties. And so on...
Sulphur and helium have entirely different properties. Sulphur has properties similar to group 16 elements. Helium has properties similar to group 18 elements.
those elements are in the same 'family' or 'group'
A family of elements is a group (column) of the Periodic Table. The family of an element is the column it is in in the Periodic Table. In a family of elements, they all have similar properties. An Example of a Family of Elements;The Alkali Metals - Group 1LithiumSodiumPotassiumRubidiumCaesiumFrancium
Elements of same group have the same number of valence electrons and hence have similar properties.
Elements in the same group have similar properties. The groups are made according to the properties of elements. Elements in a group have an equal number of valence electrons.
number of electrons in valence (last) shell