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दो समान धनावेशित आयन एक - दूसरे को `3.7xx10^(-9)` न्यूटन के बल से प्रतिकर्षण कर रहे हैं। इनके मध्य की दुरी 5 Å है। कितने इलेक्ट्रॉनों की कमी होगी ?

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दिया है, माना `q_(1)=q_(2)=q,`
दुरी `r=5Å=5xx10^(-10)" ,"F=3.7xx10^(-9)` न्यूटन
सूत्र - `F=(1)/(4pi epsilon_(0))(q_(1)q_(2))/(r^(2))`
`" "=(1)/(4pi epsilon_(0)^(2))((n e)(n e))/(2)," "[because q=n e]`
या `" "F=(1)/(4pi epsilon_(0)).(n^(2)e^(2))/(r^(2))" या "n^(2)=(Fxx4pi epsilon_(0)r^(2))/(e^(2))`
मान रखने पर,
या `" "n^(2)=4` या `" "n=2`.

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