How was it shown that atom has empty space ?

A metallic crystal has the bcc type stacking pattern. What percentage of volume of this lattice is empty space ?

The density of solid argon is 1.65g//mL at -233^(@)C . If the argon atom is assumed to be sphere of radius 1.54xx10^(-8)cm , what percentage of solid argon is apparentaly empty space ? (At. Wt. of Ar=40)

Rutherford's alpha -particle scattering experiment showed that (i) electrons have negative charge. (ii) the mass and positive charge of the atom is concentrated in the nucleus. (iii) neutron exists in the nucleus. (iv) most of the space in atom is empty. Which of the above statements are correct ?

The number of ways the letters of the word PERSON cann be placed in the squares of the figure shown so that no row remain empty is

Fill in the blank spaces. The empty space between the molecules is called_______space.(molecular/ intermolecular)

packing fraction of a unit cell is drfined as the fraction of the total volume of the unit cell occupied by the atom(s). P.E=("Volume of the atoms(s) present in a unit cell")/("Volume of unit cell")=(Zxx(4)/(3)pir^(3))/(a^(3)) and % of empty space = 100- P.F.xx100 where Z= effective number of stoms in s cube . r= radius of a an atoms a = edge lenght of the cube % empty space in body centered cubic cell unit is nearly :

How would you prove that a so-called empty glass is not empty ? What does it contain ?

A paralle plate air capacitor has capacitance C. Now half of the space is fillel with a dielectric material with dielectric constant K as shown in figure . The new capacitance is C . Then

Five balls are to be placed in three boxes in how many diff. ways can be placed the balls so that no balls remain empty if .