Chemistry Questions

When exposed to certain frequencies of radiation, such as radio waves, the subatomic particles called electrons that orbit an atom's nucleus will "jump" back and forth between energy states. Clocks based on this jumping within atoms can therefore provide an extremely precise way to count seconds.It is no surprise then that the international standard for the length of one second is based on atoms. Since 1967, the official definition of a second is 9,192,631,770 cycles of the radiation that gets an atom of the element called caesium to vibrate between two energy states.

German Chemist, Adolf von Baeyer first synthesized Barbituric Acid in 1864.

SO2 has a net dipole moment and has a bent shape in its structure as water molecule. Hence it is a polar molecule.

Among the given options, CH4 is a non polar molecule with symmetrical tetrahedral shape.

The two elements that are used to make bronze are tin and lead.