Helium and neon are unreactive gases-what, if anything, do their atoms have in common?

What is the number of helium atoms in 1 mole He?

The atomic masses of helium and neon are 4.0 and 20.0 amu respectively. The value of the de Broglie wavelength of helium gas at -73^(@)C is M times the de Broglie wavelength of neon at 727^(@)C . The value of M is

What property do all the same group of the periodic table as boron have in common?

What do you mean by donor atom and acceptor atom?

Two squares of 1xx1 are chosen at random on a chestboard. What is the probability that they have a side in common ?

Besides better aeration and mixing properties, what other advantages do stirred tank bioreactors have over shake flasks?

Helium and neon do not form clathrate compounds with quinol-why?

Helium and neon do not form compounds with fluorine-why?

How many elementary particles do an atom have?