Michelle says thanks for helping The surface of an ideal molecule of table salt

Question

Michelle says thanks for helping

The surface of an ideal molecule of table salt (NaCl) is a square with a chemical structure as shown in the figure. The blue spheres represent Na+ ions and the green spheres represent Cl? ions. Consider only points A, B, C, and D. What is the magnitude of the net electrostatic force on the chlorine ion at point A due to the sodium ions at points B and C? Note: the bond length is 0.282 nm.
1 N

Michelle says thanks for helping The surface of an ideal molecule of table salt (NaCl) is a square with a chemical structure as shown in the figure. The blue spheres represent Na+ ions and the green spheres represent Cl? ions. Consider only points A, B, C, and D. What is the magnitude of the net electrostatic force on the chlorine ion at point A due to the sodium ions at points B and C? Note: the bond length is 0.282 nm. 1 N

Explanation / Answer

Fele = kq1q2 / d^2

Eletcric force between Na+ and Cl- atoms.

F = 9 x 10^9 x 1.6 x 10^-19 x 1.6 x 10^-19 / (0.282 x 10^-9)^2

F = 2.90 x 10^-9 N

eletric force at A due to B is F and also due to C is F but in perpendicular direction .

Fnet = sqrt(F^2 + F^2) = 4.10 x 10^-9 N

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