Which method of heat transfer happens when heat is transferred from one object to another by electromagnetic rays? convection thermal radiation conduction

Radiation.

Explanation:

There are three types of heat transfer

Convection : when heat is transfered via fluids its called convection heat transfer.

Radiation : when heat is transfered via electromagnetical waves  its called radiation heat transfer.

Conduction: when heat is transfered via solid material its called conduction heat transfer.

Therefore, when heat is transferred from one object to another by electromagnetic rays there is radiation heat transfer

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it is stable as it is in group 0 which have full outer shells of electrons