Find the magnitude of the electrostatic force between a na+ ion and a cl− ion separated by 0.46 nm. n (b) would the answer change if the sodium ion were replaced by li+ and the chloride ion by br−?

electrostatic force = 1.08 ×  N

and if sodium ion replace by Li+ and chloride by Br− then there will be no change in electrostatic force

magnitude of electrostatic force will be same

Explanation:

given data

separation d = 0.46 nm = 4.6 × m

to find out

electrostatic force between Na+ and Cl− ion

and if sodium ion replace by Li+ and chloride by Br−

solution

we know electrostatic force formula that is

electrostatic force = K ×Q1×Q2 / d²          .........................1

here k is coulombs constant that is = 9 × and Q1 and Q2 is

charge that is Q1 = + 1.6 × C

and Q2 = - 1.6 ×  C

so put all these value in equation 1

electrostatic force = K ×Q1×Q2 / d²

electrostatic force =  9 ×  ×1.6 × × -1.6 × / (4.6 ×)²

so electrostatic force = 1.08 ×  N

and if sodium ion replace by Li+ and chloride by Br− then there will be no change in electrostatic force

so magnitude of  electrostatic force will be same

the total distance that martina travels that day is

(distance from home to mom's office) plus (distance from mom's office to school)

plus (distance from school to library) plus (distance from library to friend's house)

plus (distance from friend's house to martina's house).

(we don't know what any of these distance actually is.)