Nonmetals are defined as elements that generally cannot conduct and are poor conductors of heat

Which of the following units is not an official si unit? mole liter kilogram ampere

How many lone pairs of electrons are on the central atom of no3- and what is the molecular shape? one, trigonal planar zero, trigonal pyramidal zero, trigonal planar one, tetrahedral one, trigonal pyramidal

An alpha particle is: a hydrogen atom a nucleus of helium two neutrons an electron