He was involved in the mapping of venus and mars
Explanation
Radius of neon atom : 69 pm = 
Volume occupied by the one atom:

given that
atoms are present in 1L
1 L = 0.001 
The volume occupied by the
neon atoms

Fraction of volume occupied by the neon atom:


The fraction of of volume occupied by the neon atom is very less than the 1 L which indicates the presence of large amount of empty space between the atoms of the gas.
Answer:
A. It measures the [products] / [reactants].
Explanation:
- The reaction quotient aids in figuring out which direction a reaction is likely to proceed, given either the pressures or the concentrations of the reactants and the products.
- It is calculated from the concentration of the products and reactants at mixing up.
- Reaction quotient (Q) = [products] / [reactants]
So, the right choice answer:
A. It measures the [products] / [reactants].
Answer:
Atomic number = 16, Atomic mass = 34, Net charge= +3
Explanation:
i) Atomic number = Proton number = 16
ii) Atomic mass = Proton number + Neutron number
= 16 + 18 = 34
iii) Net charge= Proton number = Electron number (when element is in ground state or unreacted state)
But, proton number (16) is not the same as electron number (13), this means the element has lost 3 electrons
Thereore, the net charge is = 16-13
= +3