Today’s periodic table. Offnfopt/Wikipedia. But once you give Mendeleev’s table a 90-degree turn, the similarity to the modern version becomes apparent. For example, the halogens – fluorine (F), ...

Some alkali metals have been known and put to good use long before Mendeleev created the periodic table. For instance, the Old Testament mentions salt – a combination of the alkali metal sodium ...

And by placing hydrogen and helium near the centre, Abubakr says this solves the problem of whether to put hydrogen with the halogens or alkali metals and of whether to put helium in the 2nd group ...

The alkali metals (the group topped by lithium) and the alkaline earth metals (topped by beryllium) got shifted from far right to the far left to create a very wide looking (long form) periodic table.

Gethin: And today we're going to be looking at the periodic table. Let's take a look at some Group 1 metals then - also known as alkaline metals. Fran: Group 1 elements are called the alkali ...

The periodic table is arranged in rows and columns that group elements with similar chemical properties above and below each other. ... It’s expected to have the characteristics of an alkali metal.

Those metals that belong to group II of the periodic table and make hydroxides like beryllium, magnesium, calcium, strontium, barium and radium are known as alkaline earth metals. Uses of Alkali ...