求翻译：纳是软金属—用刀容易切割；刚切时有光泽；但很快失去光泽；在油中保存以避免与空气反应；原子的最外层有一个电子；容易失去最外层电子而成为正离子；同水剧烈反应，产生氢气和氢氧化钠溶液；形成可溶于水的离子化合物。是什么意思？

Sodium is a soft metal - easily cut with a knife; just shiny when cut; but soon lose their luster; stored in oil to prevent reaction with air; the outermost layer of atoms has one electron; easy to lose the outer electron and become positive ion; violent reaction with water to produce hydrogen and s

Satisfied that it was easy to cut soft metals - with a knife at all; just a luster; but soon lost its luster; the oil stored in response to avoid with air; the outer layer of atoms with an electronic; easy to lose the outer layer of electronic and become positive ions with intense reaction stemming

Accepts is the soft metal - easy to cut with the knife; Just cut when has the gloss; But tarnishes very quickly; Preserves in the oil avoids with the air response; The atomic most outer layer has an electron; Easy to lose the most outer-shell electron to become the cation; With the water fierce resp

NA is a soft metal-easy to cut with a knife; just shiny when cut, but quickly lose luster; save to avoid reaction with air in the oil; outermost atom has a electronic; easily lose most outer electrons and positive ions, and reacts violently with water, producing hydrogen gas and sodium hydroxide; fo

NA is a soft metal-easy to cut with a knife; just shiny when cut, but quickly lose luster; save to avoid reaction with air in the oil; outermost atom has a electronic; easily lose most outer electrons and positive ions, and reacts violently with water, producing hydrogen gas and sodium hydroxide; fo