(d) The potential energy (U) of two atoms when they are a distance (r)

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(d) The potential energy (U) of two atoms when they are a distance (r) apart, is given by: U = −A rm + B rn, m = 2, n = 10 Given that the atoms form a stable molecule at a separation of 0.3 nm, with an energy of 6.4×10−19 J, calculate parameters A and B. [6]

(d) The potential energy (U) of two atoms when they are a distance (r) apart, is given by: U = −A rm + B rn, m = 2, n = 10 Given that the atoms form a stable molecule at a separation of 0.3 nm, with an energy of 6.4×10−19 J, calculate parameters A and B. [6]

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(d) The potential energy

(U)

of two atoms when they are a distance

(r)

apart, is given by:

U = - \frac{A}{r^{m}} + \frac{B}{r^{n}}, m = 2, n = 10

Given that the atoms form a stable molecule at a separation of

0.3 n m

, with an energy of

6.4 \times 10^{- 19} J

, calculate parameters

A

and

B

. [6]

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