Group 1A elements have similar properties because they what?
;need the same number of electrons to fill their valece shells
;have the same number of valence electrons
Elements within a group have similar chemical properties because the chemical properties of element are determined by the ease which they donate or accept electrons. Elements within a group have sim,ilar chemical properties have the same number of valence electrons and they have the same number of electrons in their outermost shell.
The elements are arranged such that properties are periodic in the table. Elements in same group have same valence electrons.Hence, they possess similar properties. The elements in the same group have an equal number of valence electrons. These electrons are responsible for the chemical reactions of elements. So elements in the same group as similar chemical properties.
By elements being similar, I assume you mean elements of the same group being similar rather than all elements in general. Elements of the same group are similar in terms of chemical properties because they share a similar electron configuration. For instance group one of the periodic table, the alkali metals, has only one electron in its outermost unfilled orbital. Because chemical reactions are dependent on the exchange and sharing of electrons, the similarity of…
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.
All the members of a group of elements have similar chemical properties because they all have the same number of electrons in their valence bands. The periodic table of elements is arranged this way, that is, by electron structure. The vertical columns are the groups of elements, and it is their electron structure that places them where they are.