Question

how do following properties vary across the group and period in the periodic table giving reason of valency​

Answer 1

Answer:

Mark me as brainliest

hope it will help you

plz follow

give❤ and 5 if you liked my answer

Explanation:

Electrons present in the outermost shell of an atom are called valence electrons of that atom. Across A Period – As we move left to right across a period in the periodic table, the number of valence electrons increases. ... It means elements present in the same group have the same number of valence electrons.

Answer 2

Answer:

Explanation:

How does the size of atom and the Valency of an element generally varies on moving from left to right in a period of the periodic table?

Answer. Explanation: It is known that in a periodic table, elements are arranged according to increasing atomic number. Therefore, as we move from left to right in a periodic table there is a decrease in atomic size of atom.