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Based on equation E = -2.178 xx 10^-18 J...

Based on equation `E = -2.178 xx 10^-18 J((Z^2)/(n^2))`, certain conclusions are written. Which of them is not correct ?

A

For n = 1, the electron has a more negative energy than it does for n = 6 which means that the electron is more loosely bound in the smallest allowed orbit

B

The negative sign in equation simply means that the energy of electron bound to the nucleus is lower than it would be if the electrons were at the infinite distance from the nucleus

C

Larger the value of n, the larger is the orbit radius

D

Equation can be used to calculate the change in energy when the electron change orbit

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The correct Answer is:
A
Correct answer is for n = 1 the electron has more negative energy than it does for n = 6 which means that the electron is less loosely bound in the smallest allowed orbit.
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Energy of an electron is given by E = - 2.178 xx 10^-18 J ((Z^2)/(n^2)) . Wavelength of light required to excite an electron in an hydrogen atom from level n = 1 to n = 2 will be (h = 6.62 xx 10^-34 Js and c = 3.0 xx 10^8 ms^-1 ).

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