Do elements in the same family share properties?
Elements in the same family have similar properties because they have the same number of valence electrons. Atomic radius of elements tend to increase down a group because the shielding effect is overcoming the large nuclear force.
Why do elements in the same period have different properties?
b) Elements in the same period have different properties because the number of valence electrons in their outermost shells differ. In a given column or group, all elements have the same number of electrons in their outermost shells. For example, in group 2, all elements have two electrons in their outermost shell.
Why are elements in different families?
The vertical columns on the periodic table are called groups or families because of their similar chemical behavior. All the members of a family of elements have the same number of valence electrons and similar chemical properties. The horizontal rows on the periodic table are called periods.
Why do not elements present in a period show similar characteristics?
This is because the chemicals properties depend on no of valence electrons. As in a group all elements have same no of valence electron that’s why they have similar chemical properties but in a period the no of valence electron varies that’s why they differ in chemical properties.
Do elements belong to the same group?
(b) Yes, they belong to same group as they have same valence electron that is 1 . They belong to group 1 . ( c) In it sodium is more electropositive as it has big size , less nuclear charge and low ionisation energy .
Why do elements in the same family generally have similar properties?
Why do elements in the same family generally have similar properties? The elements in the same group has similar number of valence electrons. They have identical number of electrons in their outermost shell. e.g. All the alkali metals in Group 1 have 1 valence electron, so they all tend to react the same way with other substances.
How are elements in the same group similar?
The elements in the same group has similar number of valence electrons. They have identical number of electrons in their outermost shell. e.g. All the alkali metals in Group 1 have 1 valence electron, so they all tend to react the same way with other substances.
How are the characteristics of an element family determined?
The characteristics of the elements in these families are determined primarily by the number of electrons in the outer energy shell. Element groups, on the other hand, are collections of elements categorized according to similar properties.
Where are the families located on the periodic table?
Element families are indicated by numbers located at the top of the periodic table. Elements may be categorized according to element families. Knowing how to identify families, which elements are included, and their properties helps predict behavior of unknown elements and their chemical reactions.