Question

energy of the electron in the hydrogen atom is given by the expression
atom in the ground state can absorb is :
1) 1312kJ
2) 328kJ
3) 656kg
4)984kJ

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Answer 1

E=−13.6n2 where the energy is in electron volts.

n is the principle quantum number.

So for an electron in n=1

E=−13.6eV.

To convert to joules you can x this by 1.6×10−19.

Now

1.6×10^-19×6.022×10^23/-13.6eV

656kgJ(convert it in kg)

Answer 2

Answer

option C

explanation

since we know that

E = - 13.6n^2

were n denotes number of cell

since electron is in ground state

so n = ,1

now

Energy = -13.6

so

E = 1.6*10^-19*6.022*10^23/(-13.6)

E= 656 kj