Relationship between atomic # and ionic radius
- Thread starter whawha
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From left to right, Atomic Radius decreases.
From Top to bottom atomic radius increases.
In each case the atomic numbers are increasing..both from l-r and t-b
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atomic radius decreases from moving up a group and across a period
when thinking in terms of ionic radius you must think of it as electrons lost or gained and the effect it will have on the atom
for example lets say you have a +1 charge. this would decrease the radius greatly because now that you lost that electron, the number of protons is greater than the number of electrons which will cause the protons to attract the electrons more. this would make the ionic radius much smaller
now for example lets say you have a -1 charge, this would increase the radius greatly because that extra electron now makes the electrons have a greater pull on the protons which increases the ionic radius
hope this helps
when thinking in terms of ionic radius you must think of it as electrons lost or gained and the effect it will have on the atom
for example lets say you have a +1 charge. this would decrease the radius greatly because now that you lost that electron, the number of protons is greater than the number of electrons which will cause the protons to attract the electrons more. this would make the ionic radius much smaller
now for example lets say you have a -1 charge, this would increase the radius greatly because that extra electron now makes the electrons have a greater pull on the protons which increases the ionic radius
hope this helps
