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why does iodine have a higher boiling point than chlorine?

If we look at group 7 of the periodic table, we can see that iodine is below chlorine. The trend in going down a group in the periodic table is that the number of electron shells increases, therefore, number...
LH
Answered by Lauren H. • Chemistry tutor
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Explain the trend in reactivity of group 2 elements with water as you go down the group.

As you go down group 2, atom size increases. Larger atoms experience more shielding. There is an increase in nuclear charge going down group 2 elements so you would expect the outer electrons to be held more...
MF
Answered by Megan F. • Chemistry tutor
10242 Views

Explain how covalent and ionic bonding works.

Covalent Bonding - This type of bonding occurs typically between non-metal elements with an incomplete outer shell of electrons. Elements may share a pair of electrons in order to complete their outer shell ...
TD
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State and explain the general trend in the first ionisation energies of the Period 2 elements Lithium to Fluorine.

The general trend is that the first ionisation energies increase across the period.First ionisation energies increase across the period as from Lithium to Fluorine the nuclear charge is increasing yet the at...
AM
Answered by Alice M. • Chemistry tutor
6243 Views

Explain why the first ionisation energy of barium is less than the first ionisation energy of calcium.

Barium is in the sixth period, Calcium is in the fourth. Therefore, Barium experiences more shielding, resulting in weaker attraction of the nucleus for outermost electrons.
JF
Answered by Joseph F. • Chemistry tutor
5840 Views