Which of the following orders is not correct with respects to the property indicated against each ?

Options

A. `NH_(3) lt PH_(3) lt AsH_(3)" (acidic behaviour)"`
B. `Li lt Be lt B lt C" (first ionisation energy)"`
C. `Al_(2)O_(3) lt MgO lt Na_(2)O lt K_(2)O" (basic character)"`
D. `Li^(+) lt Na^(+) lt K^(+) lt Cs^(+)" (ionic radius)"`

Answer

B