by giving suitable examples prove that all the elements of a group show similar properties ,while the properties of the elements in a period show a gradual change
Answers
all elements in a Periodic table show the gradual change because because same group of electricity has out electricity is the same electricity
Elements across a group show similar chemical properties due to same number of valence electrons. Whereas elements across a period show gradual change due to decrease in size and different number of valence electrons.
Explanation:
Elements present in same group tend to show similar chemical properties due to the same number of electrons present in their outermost shell. As a result, these elements tend to show similar reactivity.
For example, Li, Na, and K are allgroup 1 elements and all of these elements contain 1 valence electron.
So, all of these elements readily lose their valence electron in order to acquire noble gas electronic configuration.
On the other hand, elements present in a period does not contain same number of valence electrons. Hence, their properties change gradually.
For example, electronegativity of elements increases across a period from left to right.
Ionization energy of elements also increases across a period from left to right.
Learn more about properties in a group and a period:
https://brainly.in/question/8380569
https://brainly.in/question/14795621
#Learnwithbrainly