Find the density and first ionization energy for sodium, potassium, magnesium, and calcium. What do these values predict will happen physically (not chemically) when each is added to water?
Which will be easiest to oxidize?
Which will be the hardest to oxidize?
Na- Density: .968g/mL; IE: 496kJ/mol
K - Density: .856g/mL; IE: 419kJ/mol
Mg - Density 1.738g/mL; IE: 738kJ/mol
Ca - Density 1.55g/mL; IE: 590kJ/mol
Thank you for any help!
2007-10-29 17:33:17 · 2 answers · asked by Anonymous in Science & Mathematics ➔ Chemistry
1. Na and K will float. Ca and Mg will sink.
2. Easiest to oxidize: K
3. Hardest to oxidize: Mg
2007-10-29 17:53:48 · answer #1 · answered by papastolte 6 · 0⤊ 0⤋
I recall learning about sodium, potassium, and magnesium. All three are light metals which will corrode in seconds, when exposed to air. All three will burn in water. Sodium burns more violently.
1st Ionization potential for sodium is 5.139, magnesium 7.646, and potassium 4.341.
2007-10-30 01:12:42 · answer #2 · answered by Kevin H 7 · 0⤊ 0⤋