1 electropositive /2 reactive metal /3 high atomic radius /4 low ionised energy /5 its hydroxl is make alkali solution /6 its carbonate is thermal decomposition !
Group 1 belongs to Alkali metals.They have low melting and boiling point.
There is no specific reason mentioned for why Dmitri Mendeleev left blank spaces on the periodic table. It is believed that he left these spaces to accommodate elements that were yet to be discovered or to demonstrate the existence of elements with certain properties that were predicted but not yet confirmed. These blank spaces eventually led to the discovery of new elements and validated Mendeleev's periodic table.
calcium
I know little about the preodic table, but in the periodic table, carbon is the element. It also exists as diamond, in a different atomic structure.
All metals form basic oxides and hydroxides All the elements... well, that's a long list. Just look for the metals. They ALL form basic oxides and hydroxides. Jessie Andrews
There is no specific reason mentioned for why Dmitri Mendeleev left blank spaces on the periodic table. It is believed that he left these spaces to accommodate elements that were yet to be discovered or to demonstrate the existence of elements with certain properties that were predicted but not yet confirmed. These blank spaces eventually led to the discovery of new elements and validated Mendeleev's periodic table.
the left side of the preodic table consistes of metals, the right side is of non metals, the middle ones are transition metals.
calcium