Question

Need Help !!
11. Write a paragraph explaining why atomic radius, electronegativity, and ionization energy show periodic trends.

Answer 1

I will give you some clues...
as you move from left to right on the periodic table the atomic radius decreases, move top to bottom the atomic radius increases, meaning the smaller the atom the more ionization energy is needed to ionize/take away an electron and viceversa. Electronegativity is the ability of an atom to attract bonding electrons to itself... if you compare the EN of Cesium (0.8) with fluorine (4.0) you can see cesium has fairly large atom and fluorine is quite small... because the size of cesium is larger the electrons are loosely hanging in the valence shell so the ionization energy required to take away an electron from cesium is fairly less as compare to the most active element in the periodic table has a small atom...therefore there is more force of attraction and it is harder to take away an electron from fluorine... therefore the bigger the atom less ionization energy and low EN, the smaller the atom more ionization energy and high EN....
Plz note there are some exceptions but that is the main concept plz see the picture i have attached...
i hope this helps..