Rubidium (Rb)
That is a very hard question to answer. Man has been using metal for a very long time. Gold, silver. and copper are thought to be the some of the first metals mankind learned to use. Blacksmiths work mainly with iron or steel. Very little iron occurs in its natural state. Iron nickle meteorites were probably used by very early people to form tools. As you can imagine there would be very little metal to work with. Current thinking is that potters using iron rich dyes found puddles of metal after the kilns cooled off. These people would of probably use this metal for decoration and art. They would of been the very first blacksmiths. That could of been as long ago as 6ooo BC or even earlier then that. Every time scientists think that they have a firm grip on the dates new evidence is found pushing the dates even further back.
Under the right circumstances, yes. So will, for example, a 15 watt soldering iron. It just won't melt very much. It is not the wattage that determines the temperature, it is the insulation (or lack thereof) around the bulb and chocolate that determine it.
The simple answer is not very well, "metal" shields were actually still mostly wood, but the key differences are that the edges are protected my metal rims, and a metal boss (lump in the middle) is used to improve bashing in close contact. The front of a shield is quite difficult to hack into when you consider that properly trained swordsmen would use it to deflect, rather than just block. The real weakness of a wooden shield was any time the opponent's weapon caught an edge, because splitting would (wood?) occur at that moment.
The first section is the wheel hub. The Romans chariots at first used carved/turned wooden hubs, and later moved on to cast metals such as bronze and copper. Early chariots had very little metal on them, but later ones had a LOT of metal depending on the owner's position in society or the use to which the chariot was intended to be put.
It would be very credible. Because he was an eyewitness to the battle, therefore it would be very credible.
The element 119 will be very probable an alkali metal.
Yes, very safe indeed.
alkali is made out of a metal called zhphonie it is a very strong metal and is a substance to the earth
Francium is the heaviest of the alkali metals, with an atomic mass of 223 grams.
Francium is considered the hardest metal in Group 1 (alkali metals). It is the most reactive alkali metal and is very rare in nature. Due to its high reactivity and radioactive nature, it is challenging to study and handle francium.
Not necessarily. Non-ferrous simply means not iron. The term may be used to refer to metals that are unlike iron, but there are very many of them which are not alkali either.
The metal of copper can react with oxygen. This is a metal that is very reactive when ti is combined with different substances.
The metal itself, no. But after reacting with water or something containing water it produces a very strong base.
This is the first column in the Periodic Table. There are six metals that are "Alkali Metals" and six that are "Alkali Earth Metals". The Alkali metals are:LithiumSodiumPotassiumRubidiumCaesiumFranciumThese metals get more reactive as you go down the list...Hope I helped :D
It would be very acidic.
In some cases yes but alkali metals are elements that have 2 valence electrons so they are very reactive. Some examples are Calcium and Radium.
The atom of an alkali metal, such as lithium, sodium, or potassium, typically contains one valence electron in its outermost shell. This makes alkali metals very reactive and eager to lose this electron to form a positive ion.