The volume occupied by one mole of any gas at standard temperature(0o) and pressure(1 atm) is 22.4 litres. This volume is a close approximation and different gases vary slightly. The molar volume of any gas at S.T.P. is 22.4L .The mole of any gas can therefore be found using the expression on the right.
Answer:
A... According to the periodic table, elements with one electron at the outermost shell or orbital are classified as alkali METALS
The correct answer is 42. I know this answer is right because i have already turned my assignment in and got it right.