Answer: The particles are moving fast but close together.
It is referred to carbon chemistry
The relationship between H+ ion concentration and pH is pH=-lg[H+]. So the pH of the solution is -lg(1.25*10^-10) = 9.9.
A. Sodium is correct.
Sodium is an alkali metal.
Aluminum is a post-transitional metal- still a metal but it’s character is not as metallic as sodium.
Silicon is a metalloid- it has characteristics from both the metals and the non-metals.
Phosphorous is a non-metal.
