【简答题】具有 ns 2 np 1~6 电子构型的是 区元素,具有 (n-1)d 5 ns 2 电子构型的是 族元素。
【简答题】具有 ns 2 np 1~6 电子构型的是 区元素,具有 (n-1)d 7 ns 2 电子构型的是 族元素。
【单选题】Our Maths teacher often gives us ________ on how to learn Maths well. [ ]
D.
some pieces of good advices
【单选题】He's our maths teacher, ____ Green. [ ]
【单选题】- Dragon céleste adore le kung-fu ? - Oui, il .......................
【单选题】—Do you know the man _______ was talking to our English teacher? —Yes. It's Mr Baker, our maths teacher. [ ]