Which element has the greatest average atomic mass?

How many grams of aluminum will there be in 98g of al2o3?

What is a possible quantum number set for an electron in the 3s orbital of a magnesium atom

Phosphorous can form an ion called phosphide, which has the formula p3−. this ion can form an ion called phosphide, which has the formula p3−. this ion properties very similar to those of pforms when a phosphorus atom loses three protonsis called a cationcontains 18 electrons