Question

the value of ground state energy of hydrogen atom is -13.6 electron volt question 1 what does the negative sign signify when how much energy is required to take and electron in this item from ground state to the first excited state​

Answer 1

Answer:

solid because 6.13 elctron

Answer 2

Answer:

i) The negative sign indicates that the electron is bound to the nucleus.

ii)  Eₙ = (-13.6)Z²/n eV

n--> energy level

Z--> atomic number

for the first excited state of hydrogen:

n=2 Z=1,

E₂ = (-13.6) (1²)/2 = -6.8 eV

therefore the energy required = 6.8 eV