HELP ME PL Air pressure decreases with increasing altitude. In other words the higher up in the atmosphere you go, the thinner the air is.
True

False

No. an alpha particle is a pair of protons and a pair of neutrons, i.e. a helium

A- electron repulsion favors a tetrahedral shape, so the orbitals are 109.5° apart from each other. of a hydrogen atom on methane. they may also contain lone pairs—this explains the geometry of water, which is sp3 hybridized due to the lone pair, which occupies one of the four hybrid orbitals.