1.

Select the correct statement about harium :

Answer»

it SHOWS photoelectric effect
it is silvery while METAL
It FORMS `Ba(NO_(2))^(2)` which is used in preparation of green FIRE
it IONISATION energy is less than radium

Solution :According to properties Ba is silvery white metal, it forms `Ba(NO_(3))_(2)` which is used in preparation of green fire and its ionisation energy is less than radium


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