T.E of e in excited state is E . WHAT IS KINETIC ENERGY with proper sign

To determine the kinetic energy (KE) of an electron in an excited state, you need to know the total energy (TE) of the electron in that state, as well as any potential energy (PE) components. The kinetic energy can be calculated using the equation:

KE = TE - PE

In this case, we are given that the total energy of the electron in the excited state is E. However, since the question doesn't provide information about any potential energy, we can assume that there is no potential energy. Therefore, the equation simplifies to:

KE = E

So, the kinetic energy of the electron in the excited state is equal to E. The proper sign of the kinetic energy depends on the reference point you choose. By convention, if E is positive, the kinetic energy will also be positive. However, if E is negative, the kinetic energy will also be negative.