Which of the following options is incorrect regarding Bohr's Model of an atom

Options

A. Ionisation energy (I.E.) order : `I.E_(H) lt I.E_(He^(+))+I.E._(Li^(-2))`
B. Angular momentum (AM) order of electron in `n^(th)` shell : `AM_("2 nd shell") lt AM_("4 th shell") lt AM_("6 th shell")`
C. If PE at the infinity is assigned as 13.6 eV then ratio of magnitude of KE to that of PE of Ist Bohr orbit in hydrogen will be in the ratio 1:2
D. Order of speed (V) of electron in `n^(th)` shell of hydrogen `V_("2 nd shell") gt V_("5 th shell") gt V_("6 th shell")`

Answer

C

Explanation

`I.E.=3.6xx(z^(2))" " "so" Li^(2+) gt He^(+) gt H`
Angular momentum `(AM)=n h/(2x)` so `AM_("6 the shell") gt AM_("4 th shell") gt AM_("2 nd shell")`
`v_(n)=2.188xx10^(6) xxa/n rArr v_(2) gt v_(5) gt v_(6)`
So answer (c)