The electron configuration for magnesium is shown below.

1s22s22p63s2

which diagram shows the correct distribution of electrons in the electron shells of a magnesium atom?

For a research project, a student decided to test the effect of the lead(ii) ion (pb2+) on the ability of salmon eggs to hatch. this ion was obtainable from the water‐soluble salt, lead(ii) nitrate, which the student decided to make by the following reaction. pbo(s) + 2 hno3(aq) → pb(no3)2(aq) + h2o losses of product for various reasons were expected, and a yield of 86.0% was expected. in order to have 5.00 g of product at this yield, how many grams of pbo should be reacted? (assume that sufficient nitric acid, hno3, would be used.)

What is the rate law for the uncatalyzed reaction?

The movement of tectonic plates and in two locations is described below: location a: tectonic played push together location b: tectonic plates push apart