Write complete electron configuration for each of the following elements:
(a) scandium
(c) bromine
(b) cesium
(d) oxygen

Some familiar products contain some of the same types of atoms. for instance, the chemical formula for baking soda is nahco 3. the chemical formula for liquid bleach is naclo, and the chemical formula for table salt is nacl. which choice best describes why these three products have some of the same types of atoms in common?

Which is an example of a reversible physical change?

Exit what is the density of an object having a mass of 5.0 g and a volume of 45.0 cm3?