All Questions
5
questions
-3
votes
2
answers
144
views
Why does atomic radius decrease across periods? [closed]
My textbook says that this happens because the number of protons, and thus the total positive charge, increases - a greater attractive force acts on each electron. The book says that this is despite ...
- 63
3
votes
3
answers
7k
views
Which atom is the smallest atom?
Is hydrogen or helium the smallest atom? My teacher said that the smallest atom is the helium atom, but I think that the smallest atom is the hydrogen atom. It has a single electron and a single ...
user100905
1
vote
0
answers
295
views
Why doesn't core charge increase down a group? [closed]
Atomic radius increases down a group because the electrons feel a lesser attraction to the positive nucleus (due to shielding from inner shells). Why then, doesn't core charge decrease seeing as core ...
- 151
1
vote
1
answer
941
views
Why is the distance between the atoms shorter in the dicarbon anion compared to the cation?
In general, the anions have bigger ionic radii than their corresponding neutral atoms, and the cations have smaller ionic radii then their corresponding neutral atoms. How come that does not apply to $...
- 57
0
votes
3
answers
5k
views
Is it possible to compress an atom to infinite density? [closed]
I know, by nature, normally atoms are stable. But I wonder, if it is possible to compress an atom, say the Hydrogen atom, to infinite density by applying external force? After all, electrons and ...
- 862