In a perfect gas all collisions between atoms or molecules are perfectly elastic and there are no intermolecular attractive forces. many common gases behave as a perfect or ideal gas at room temperature and pressure. the ideal gas law relates the pressure, volume, and temperature of a known amount of gas. which equation represents the pressure-volume-temperature-mole relationship of an ideal gas? a) (p1/t1)=(p2/t2) b) (p1v1/t1)=(p2v2/t2) c) p1v1=p2v2 d) pv=nrt

PV=nRT

Explanation:

P stands for Pressure T for absolute temperature, n is the number of moles of the ideal gas which is calculated by dividing the mass of the gas by the relative molecular mass, that is, mass(grams)/ RMM, R is the univeral gas  constant=8.31441J/Kmol

since the atomic number is the number of protons in the nucleus, as we move to the left on the periodic table, the electrostatic pull between the nucleus and the valence electron shell decreases. as we move down a group (vertical column), the valence shell energy level gets further and further from the nucleus.