6 votes

Why is diamond not the most dense substance?

There is no general relation between hardness and density. One thing is the packing and bonding character ( what matters mostly for hardness), other is the idealized atomic ball radius and the atomic ...
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3 votes

Iodine clock reaction: lower temperature but faster result?

I agree that the iodine clock reaction is complex, but if you need an answer for your teacher, the explanation may center around "sulfurous acid" implied in your reaction chain, that ...
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  • 4,825
2 votes

Electronic configuration in d-block

It doesn't matter the way you write it. 4f 5d 6s is the same as 6s 4f 5d. The first one is ordered by energy and the second by the way the orbitals are filled. Even though, you must note that the 5d${^...
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2 votes
Accepted

Why ionization energy of Thallium is higher than that of Indium?

First, your Zeff calculations based on Slater's rules are correct, the values of the Zeff are 5 for both Indium's 5p and Thalium's 6p outermost electrons, as their respective shielding values are 44 ...
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1 vote

Why ionization energy of Thallium is higher than that of Indium?

So, 1/ Relativistic effects are based on the theory of relativity. So with these heavy atoms is important to consider it because in these elements electrons do attain sufficient speeds for the ...
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1 vote

Electronic configuration in d-block

Writing 6s orbital at end of electronic configuration indicates that electron will first be removed from 6s orbital then 5d then 4f. d blocks are exceptional casses. That's why they behave like that. ...
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