3. Many transition metals can form more than one simple positive ion. For example, iron forms both Fet2 and Fe*3 ions, and tin forms both Sn*2 and
Sn4 ions. Which is the smaller ion of each pair, and why?

Non renewable resources like petroleum eventually

Astudent is asked to identify and element that is pale yellow brittle solid and does not conduct electricity. at which location in this periodic table would the element most likely be found?

The bond energy for the van der waals bond between two helium atoms is 7.9×10−4ev. assuming that the average kinetic energy of a helium atom is (3/2)kbt, at what temperature is the average kinetic energy equal to the bond energy between two helium atoms