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Express the Rydberg constant R= 109678 ...

Express the Rydberg constant ` R= 109678 cm^(-1)` in (a) J/atom (b) J/mol.

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`E= hv= h (c)/(lambda) = hc overline(v)`
` = 6.626 xx 10^(-27) xx 3.0 xx 10^(10) xx 109678`
` = 2.18 xx 10 ^(-18) J//at om, = 1` Rydberg
` = 2.18 xx 10^(-18) xx 6.023 xx 10^(23) J//mol e`
` = 1.31 xx 10^6 J//mol e `.
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P BAHADUR-ATOMIC STRUCTURE-Exercise 9
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