Be sure to answer all parts. Give the name and the formula of the compound formed from the following elements: (a) phosphorus and sodium Name: Formula:
(b) calcium and sulfur Name: Formula:
(c) aluminum and bromine Name: Formula:

Its strengthits conductivity of heat and electricity its shiny colourmalleable and ductility

Van der waals forces are temporary electromagnetic forces established between uncharged atoms. some neutral molecules, when close together, can become temporarily “charged,” as electrons move around the atom. water is a polar molecule, the side of the molecule that the hydrogens bond to being more positive, and the opposite side bound to the lone pairs of electrons being more negative. this means that it participates in dipole-dipole interaction (non-polar exhibits dispersion forces), and it has the capacity for hydrogen bonding.