Home › CBSE Class 11 › Chemistry › Atomic combinations › For $He^+$, the ionisation energy from its groun…
For $He^+$, the ionisation energy from its ground state is
A$27.2\,eV$
B$54.4\,eV$
C$13.6\,eV$
D$6.8\,eV$
Answer & Solution
Correct answer: B. $54.4\,eV$
$IE = 13.6 \cdot Z^2 = 13.6 \cdot 4 = 54.4\,eV$ for $He^+$ ($Z=2, n=1$).
Related questions
The strength of a bond depends chiefly on the extent of:Sidewise overlapping produces charged clouds shaped like a:In a pi bond, the axes of the overlapping orbitals remain:Head-on overlap along the internuclear axis is also called:A sigma bond is formed by overlap that is:In a molecule such as HF, the covalent bond is:A bond where the electron pair sits exactly between identical nuclei is:The nitrogen bond enthalpy of 946 kJ per mol is one of the: