The angle formed by the nuclei of two surrounding atoms with the nucleus of the central atom in a structure is called a(n) angle. The value predicted for such an angle using the VSEPR theory would be 180 degrees, based upon geometry alone. This is referred to as the bond angle. In practice, this value often deviates from the predicted value for various reasons.

1) how many electrons are in each energy level of the following elements? a. he b. na c. na d. ne 2) how many valence electrons are percent in the following atoms? a. s b. mg c. be d. cl 3) which of the following elements are stable as atoms? a. he b. o c. cl d. ar if you are able to provide the work as to how you got the answers that would be greatly appreciated. : )

May someone me with these science questions

What is the ph of a solution that has a hydrogen ion concentration of 1.0 * 10 -9 m?