Chemistry Quiz

Chemistry Level 2

Suppose the elements B e , B , O , N Be \ , \ B \ , \ O \ , \ N are arranged in increasing order of their First Ionization Energy , which of them will stand second and third respectively?

B , O B , O B e , N Be , N B e , O Be , O B , N B , N

Nihar Mahajan by Nihar Mahajan , 20, India

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1 solution

Nihar Mahajan
Sep 18, 2015

Since ionization energy increases across a period , you would think ionisation energy of B e < B < N < O Be<B<N<O . However , due to half filled electronic configuration there are exceptions and the correct order turns out to be B < B e < O < N B<Be<O<N . So 2nd and 3rd are B e , O Be,O respectively.

1 Helpful 0 Interesting 0 Brilliant 0 Confused

What is half filled e.c?

Mark Allen Facun - 5 years ago

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