Boron is the only element in group III of the Periodic Table which is non-metallic. Metal hydroxides must form a stable cation and anion i.e. OH-. Boron does not form a stable cation. This is the reason why metals form basic hydroxides while boron forms a weak acid called boric acid.
Because aluminium oxide is strong and forms a coating over the aluminium, whereas iron oxide (rust) flakes away.
Because limestone is not dangerous when in contact with plants/animals etc. whereas I think calcium hydroxide is an irritant
A carbonate ion is CO3 with a anion of 2- whereas a hydroxide ion is OH with an anion of - Hope this helps.
The maximum capacity of electron accommodation in aluminium is 18 electrons( M shell) on contraty it has only 3 valence electrons whereas boron has maximum capacity of 8 electrons(L shell) and it has 3 valence electrons so electron population of Aluminium is less than that of boron.
I think you mean how do you extract copper from copper oxide, if so here's your answer. Take your copper oxide and heat it with something that is more reactive than copper. Carbon is a good example. The more reactive carbon will oxidise, taking the oxygen from the copper oxide leaving copper. copper oxide + carbon --> copper + carbon dioxide 2Cu0 + C --> 2Cu + CO2
Because aluminium oxide is strong and forms a coating over the aluminium, whereas iron oxide (rust) flakes away.
Because limestone is not dangerous when in contact with plants/animals etc. whereas I think calcium hydroxide is an irritant
The difference is magnesium oxide contains oxide ions ,whereas aluminium oxide doesn't.
Sodium is a highly reactive alkali metal whereas aluminium is a less reactive metal in the boron group.
You can do this using a magnet. Iron is ferrous, therefore attracted to magnets, whereas aluminium is non-ferrous and is not attracted to magnets.
This is because metals like gold lie at the bottom in the activity series so they are less reactive and are found in the free state, whereas, metals like aluminium, zinc, etc. are found on the top of the activity series so they are highly reactive and are found in the form of compounds.
A carbonate ion is CO3 with a anion of 2- whereas a hydroxide ion is OH with an anion of - Hope this helps.
The maximum capacity of electron accommodation in aluminium is 18 electrons( M shell) on contraty it has only 3 valence electrons whereas boron has maximum capacity of 8 electrons(L shell) and it has 3 valence electrons so electron population of Aluminium is less than that of boron.
I think you mean how do you extract copper from copper oxide, if so here's your answer. Take your copper oxide and heat it with something that is more reactive than copper. Carbon is a good example. The more reactive carbon will oxidise, taking the oxygen from the copper oxide leaving copper. copper oxide + carbon --> copper + carbon dioxide 2Cu0 + C --> 2Cu + CO2
Their are hydroxyl ions not hydroxide ions. They are OH- . hydronium ions are H3O+ . Presence of hydroxyl ionsin a compound shows its basic nature whereas presence of hydronium ions in a compound shows its acidic nature .
The "freebase" form is purified using sodium hydroxide whereas the "salt" form is soluble.
According to acid/base theory, acids release H+ ions in solution whereas bases release OH- (hydroxide) ions