Advertisements
Advertisements
प्रश्न
Calculate the energy required for the process.
\[\ce{He^+_{(g)} -> He^2+_{(g)} + e^-}\]
The ionisation energy for the H atom in its ground state is −13.6 ev atom−1.
Advertisements
उत्तर
\[\ce{He^+_{(g)} -> He^2+_{(g)} + e^-}\]
En = `(-13.6"z"^2)/"n"^2`
E1 = `(-13.6(2)^2)/(1)^2` = −54.4
E∞ = `(-13.6(2)^2)/(∞)^2` = 0
∴ Required Energy for the given process = E∞ – E1 = 0 – (– 54.4) = 54.4 ev
APPEARS IN
संबंधित प्रश्न
Electronic configuration of species M2+ is 1s2 2s2 2p6 3s2 3p6 3d6 and its atomic weight is 56. The number of neutrons in the nucleus of species M is
Assertion: The spectrum of He+ is expected to be similar to that of hydrogen.
Reason: He+ is also one electron system.
The electronic configuration of Eu (Atomic no. 63) Gd (Atomic no. 64) and Tb (Atomic no. 65) are:
The maximum number of electrons in a sub shell is given by the expression
If n = 6, the correct sequence for filling of electrons will be,
Define orbital?
Determine the values of all the four quantum numbers of the 8th electron in the O-atom and 15th electron in Cl atom.
Give the electronic configuration of Mn2+ and Cr3+
Describe the Aufbau principle.
An atom of an element contains 35 electrons and 45 neutrons. Deduce
- the number of protons
- the electronic configuration for the element
- All the four quantum numbers for the last electron
