To illustrate the Lewis structure, P has 5 valence electrons O has 6 valence electrons (each for 4 oxygen) And finally, for every negative charge, there is an additional valence electron
We should add these all up = 5 + 24 + 3 = 32 valence electrons
With this, we can be guided to illustrate the lewis structure as P as central atom and the 3 oxygen each with a single bond with P and 1 oxygen with a double bond with P. We place the valence electrons until octet rule is satisfied, we will be left with 12 lone pairs for phosphate ion.
Density (ρ) is the physical property of a substance. It is equal to the mass per unit volume of a given substance. The SI unit of density is kg/m³.
Density (ρ) = mass (m) ÷ volume (V)
<u>Given:</u> density of liquid benzoic acid = 1.08 g/cm³ and density of solid benzoic acid = 1.266 g/cm³
As 1.08 g of benzoic acid occupies 1 cm³ volume in the liquid state and 1.266 g of benzoic acid occupies 1 cm³ volume in the solid state.
<u>Thus the molecules of benzoic acid are more densely packed in the solid state as compared to the liquid state</u>.
<u>Therefore, the average distance between the molecules of benzoic acid is greater in the liquid state as compared to the solid state.</u>
Also, as the benzoic acid in the solid state is more densely packed than benzoic acid in the liquid state.
So, <u>if 1 cm³ of liquid benzoic acid is solidified</u>, then the volume occupied by solid benzoic acid having the same mass, <u>occupies less space or volume as compared to the liquid benzoic acid.</u>
The conductor runs a circular path from the power source, through the resistor, and back to the power source. The power source moves the existing electrons in the conductor around the circuit. This is called a current. Electrons move through a wire from the negative end to the positive end.