Group-1 are alkali elements.They have one valence electron.
The alkali metals.
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Group I elements are called alkali metals as they are generally basic in nature
Hydrogen is period 1 and group1 element. It has only one electron.
Periods have same shells. There are 7 periods in periodic table.
The alkali metals.
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Group I elements are called alkali metals as they are generally basic in nature
Hydrogen is period 1 and group1 element. It has only one electron.
Sodium, Na, is in group 1 on the periodic table. The elements in group1 are the elements in that vertical column, which are Li,Na,K,Rb,Cs,Fr.
Periods have same shells. There are 7 periods in periodic table.
group four in the periodic table is a carbon group
The elements in the Periodic Table are arranged in order of increasing atomic number.
The mass of the elements
The elements in the periodic table are arranged in order of increasing atomic number.
Nowadays usually put in the same group as the alkali metals, group1. Hydrogen is an odd-ball elemnt. It shares no characteristics aprt from 1 electron in valence shell with the alkali metals. Some older versions put in TWO places, with the alkali metals (group1) and with the halogens, group 17. Reasonable as H loses one electron (like a group 1) and gains one (like a halogen) when it forms the hydride ion.
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