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Do you know what is atomic radius?
Good job! That's the right answer.
Atomic radius just like distance between atomic outer shell, and atomic nuclears
Do you know something else about atomic radius?
I also heard we can know about atomic radius from perioadic table.
So the atomic radius of carbon is less than oxygen.
You're right! But the periodic trend of the atomic radius in the same period are decreasing . That's because the attraction will increasing if an atom has more electrons.
By the way, the trend of the atomic radius in the same group will increase as the number of shells increase.
That's because the size of atom will become bigger if it has more electron shells.
Thanks, I got you, I just need to remember the atomic radius will decrease left to right, and will increase up to down.
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