Which of the following sub shells is highest in energy. 1.3s

2.3p

3.3D

4.4s

Describe the chemical reaction based on the chemical equation below. also, explain whether the equation is balanced.

The diagram shows the positions of the sun, moon and earth during spring tides, when the high tides are at their highest and low tides at their lowest. what is it about these positions that causes these high and low tides?

What is the maximum number of electrons that an atomic orbital can contain?