Tag: occurence of metals

In element of $VA$ only arsenic and antimony are metalloids where as nitrogen and phosphorus are non metal. Bismuth and moscovium are metal.

Copper is a metal which was first discovered by man.

Francium, right on the bottom of the group one of periodic table. As we know,size of the atoms increases as you go down a column and decreases as you go across the table. The larger the atom, the easier is to get rid of the valence electrons and easier to react with other atoms. Now if you look at the periodic table, francium has the largest radius therefore it is the most reactive element.

Hydrogen, oxygen, nitrogen etc. are non-metal and boron, silicon, germanium etc. are metalloids. On the basis of chemical and physical properties, elements are further classified into metals, non metals and metalloids.

Aluminium is the most abundant metal in the earth's crust. The second most abundant metal in the earth is iron and third one is calcium.

Some metals are found in earth's crust in the free state. Some are found in the form of their compounds. The metals at the bottom of activity series are least reactive.

Iodine is a non-metal. Even though iodine is a non-metal, it has metallic lustre. It is neither ductile nor malleable. It is a poor conductor of electricity. These are properties of non-metals.

Boron is neither metal nor non metal it is a metalloid.

The oxide ore of zinc is known as zincite.

Metals found at the top of the reactivity series are never found in free-state as they are very reactive, e.g. K, Na, Ca, Mg and Al, etc.