Although hydrogen is written above the alkali metals on the Periodic Table, it is not an alkali metal. It is only placed in that location because it has 1 electron in its outermost s orbital, like the alkali metals. Some tables put hydrogen all by itself above the rest of the table in the middle, with lines running from it diagonally down to both lithium and fluorine, to indicate its ability to either accept or donate a single electron to achieve a filled outer shell. However, it doesn't really belong with the alkali metals or with the halogens.
Because like alkali metals, it forms positive ions
Because hydrogen contain one electron in it's outer most shell similar to other alkali metals
because it is the smallest and first element and also it has one valence electron as do other alkali metals.
it really doesnt that's how unique it is
As with all alkali metals, hydrogen has one electron in its outermost shell.
Properties of Hydrogen. Hydrogen is a nonmetal and is placed above group in the Periodic Table because it has ns1 electron configuration like the alkali metals.
Alkali Metals
Group one metals are the Alkali Metals, but Hydrogen is placed in group one because of its electron arrangement. All group one metals have one electron in their valence shell (outer most shell) and hydrogen is no exception. It has one electron in its last shell, and is therefore placed in group one even though it is not an alkali metal.
Alkali earth metals are placed in the second group of the periodic table of Mendeleev.
Hydrogen is placed in group 1, along with alkali metals
As with all alkali metals, hydrogen has one electron in its outermost shell.
Properties of Hydrogen. Hydrogen is a nonmetal and is placed above group in the Periodic Table because it has ns1 electron configuration like the alkali metals.
Alkali Metals
Group 1- the Alkali metals and also Hydrogen.
Hydrogen. It is placed with the alkali metals in group 1 because of its electron configuration, but it is a nonmetal.
Hydrogen is a non-metal; it's in group VII
The alkali metals are group 1, also known as group 1A.
Group one metals are the Alkali Metals, but Hydrogen is placed in group one because of its electron arrangement. All group one metals have one electron in their valence shell (outer most shell) and hydrogen is no exception. It has one electron in its last shell, and is therefore placed in group one even though it is not an alkali metal.
Alkali earth metals are placed in the second group of the periodic table of Mendeleev.
Hydrogen is placed in the group 1 because has some chemical similarities and electron configuration (one electron).
Hydrogen is a group 1 period 1 element. This means it contains only 1 electron. It is place above the alkali metals because if it were with the non-metals it would have to have more electrons. Most diagrams of the periodic table have a divide between it and the alkali metals to remind people of the difference.