Question

what are all the trends in the modern periodic table

I will mark as brainliest ​

Answer 1

atomic radius decreases in moving from left to right

the metallic character decreases in moving left to right

atomic size increases down the group

valence shell electrons increases across the period

Answer 2

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here is your answer.

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general trends of the modern periodic table are

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GROUPS

1. numbers of shells and Valence Electrons increases arithmetically and the number of Valence Electrons remains equal to the number of the group to which the element belongs .

2. valency of an element equals the number of electrons present in its valence shell

since elements in a particular group have an equal number of electrons in the respective valence shells valency of all elements in a given group is the same .

3. elements in a given group possess similar electronic configuration so they have very similar physical and chemical properties which change uniformly down the group .

4. as one moves down a group the size of atoms of successive elements increases this is because of the progressive increase in the number of shells

5. metallic character increases as one moves down a group

PERIOD

1. on moving from left to right in a given period number of shells remains the same .

2. in a given period the number of electrons in valence shell increases from left to right

3 . valency of elements with respect to hydrogen increases arithmetically from 1 to 4 and back to1 .

4. size of atom decreases when moving left to right in a period because increase in the number of protons increases nuclear pull which decreases the size .

5. properties of elements depends upon the number of electrons in its outermost orbit .

show reactivity first decreases upto group 14 and then increases

6. on moving from left to right in a given period the metallic character gradually decreases

7. the last element of each period is inert

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