Which type of radiation is blocked lead & concrete?

According to the vsepr theory what is the shape of a molecule that has a central atom valence three other items with no lone pairs of electrons

For each of the following compounds, decide whether the compound's solubility in aqueous solution changes with ph. if the solubility does change, pick the ph at which you'd expect the highest solubility. you'll find ksp data in the aleks data tab. compounds does solubility change with ph

Arrange the elements in order of increasing electronegativity. use the periodic table to you arrange the elements. p o k mg