Monthly Archives: October 2017

请家长教给您的孩子唱 《我的祖国 》

为我班准备参加本校Chinese New Year celebration,请家长教给您的孩子唱 《我的祖国 》。

我今天发给了每一位学生《我的祖国 》简谱, 五线谱 和歌词。




Homework, week Oct 16, 2017

Making paper models of Molecular Geometry: Tetrahedron, Trigonal pyramid and Octahedron

You may cut paper triangles and tape them together with Scotch tape.


Chapter 5 homework, week Dec 05, 2016

NH3 – Trigonal pyramid molecular geometry


Chemistry SAT homework week of 10/08/2017

Following the order below to fill the orbitals of the first 36 elements in the Period Table:

1s, 2s, 2p, 3s, 3p, 4s, 3d, 4p, 5s, 4d, 5p, …

A maximum of two electrons are put into orbitals in the order of increasing orbital energy: the lowest-energy orbitals are filled before electrons are placed in higher-energy orbitals.

Exp. 11Na: 1s2, 2s2, 2p6, 3s1     or [Ne] 3s1