Posted by John on Tuesday, November 6, 2007 at 9:03pm.
What do you think and why?
i know its either 1 or 2 because i know the radius will decrease but i dont know about the ionization energy..
You are right. The radius decreases. But we can figures out the why for both parts by the following:
Think about this. Let's pick the first element in the period (Na) and the last element in the period (Cl).
Na has 11 protons (+ charge) in the nucleus. Cl has 17 + charges in the nucleus. Which will pull harder on trying to get those electrons (remember + charges attract negative charges) to come in with them. Of course, the 17+ charges will pull harder; therefore, the Cl is smaller than the Na.
Now for ionization potential.
If we are trying to pull the outside electron away, which will be harder? To pull an electron (with a negative charge) away from 11+ charges or to pull an electron away from 17+ charges. Of course it will be harder to pull an electron away from 17+ charges won't it. So the ionization potential generall increases as we go from left to right.
so that mean the answer is number 1?
yes
Related Questions
Chemistry - As you go across the period of the periodic table, you are ...
CHEM Periodic Trends - Each of the statements below attempts to explain why some...
chemistry - what is the difference between elements in a group and elements in a...
chemistry - I wanted to check my True and False Chemistry HW. I am not 100% they...
Phyiscal science test monday - The following is a periodic table below All the ...
chemistry - please help!!! im confused... can you explain to me how period and ...
Chemistry - I have to make a game based on the periodic table Here are the ...
Chemistry - What trends the atomic radii of group 2A ?what trends the atomic ...
Chemistry - What trends the atomic radii of group 2A ?what trends the atomic ...
Final Exam- Honors Physical Science - how can you determine the number of ...
For Further Reading
