2006-11-09 02:26:30 · 5 answers · asked by Amber B 1 in Science & Mathematics ➔ Chemistry
The alkali metals, also known as Group 1. They are lithium (Li), sodium (Na), potassium (K), rubidium (Rb), caesium (Cs), and francium (Fr). The single valence electron is so easily given away that the elements lower down in the group react explosively with water. Because they are so highly reactive, they are not found in elemental form in nature, only as ionic compunds. They are stored under mineral oil to prevent reactions with the moisture in air.
Hydrogen is also in Group 1, but its single electron is held very close to the nucleus (a single proton), which means that the electron is not easily given away. Hydrogen can form a positive or negative ion, because it can also easily accept a second electron to fill its valence shell. Thus, it is not an alkali metal and is not a member of the family you are asking about. However, under extremely high pressure, as occurs near the core of Jupiter, hydrogen does take on a metallic structure and behaves as an alkali metal.
2006-11-09 02:30:11 · answer #1 · answered by DavidK93 7 · 0⤊ 0⤋
The family that has 1 electron that is easily given away is Hydrogen which is in Group 1 often referred to as the alkali metals. Elements in this family have 1 valence electron making it easier for it to be given away, this is why hydrogen can give away it's 1 electron
2006-11-09 10:51:49 · answer #2 · answered by Samuel_007 2 · 0⤊ 0⤋
group 1.Na and Li is at the top 2.
2006-11-09 10:35:16 · answer #3 · answered by den s 2 · 0⤊ 0⤋
look at the periodic table. if you understand how electrons are configured the answer is now really simple.
2006-11-09 12:01:22 · answer #4 · answered by shiara_blade 6 · 0⤊ 0⤋
alkali metals, group 1 (except hydrogen)
2006-11-09 10:30:17 · answer #5 · answered by Anonymous · 0⤊ 0⤋