chemistry electronic structure问题！

plouffle0789

The outermost electron configurations of elements x and y are ns1np4 and ns2np5 respectively.Which of the following pairs represent the formula and the type of bonds formed by elements?


ans:xy2,covalent


我不明白。谁可以告诉我怎样算到的？

Allmaths

The outermost electron configurations of elements x and y are ns1np4 and ns2np5 respectively.Which o ...
plouffle0789 发表于 12-9-2011 10:52 PM

   
The outermost electron configuration of element X is ns2np4 means that the element X has 6 valence electrons and is non-metal.Whereas,on the other hand,the outermost electron configuration of element Y is ns2np5 means that the element Y has 7 valence electrons and is non-metal.So,in conclusion,one X atom will share two of its valence electrons with one electron from each of the two Y atoms to form two single covalent bonds.The chemical formula of the newly-formed compound is XY2.The shape of this compound is V-shaped(Bent shaped).

从我朋友那里拿来的答案。。希望可以帮到你。。。