Which combination of elements would form an ionic bond? * Oxygen and sulfur
fluorine and iron
calcium and sodium
carbon and bromine

I think it's c cuz calcium sorry if I'm wrong love youu

answer; i believe the correct answer is (c) /// is a homogeneous mixture of gaseous substance nitrogen,oxygen and smaller amounts of other substancesmixtures can be either ( homogeneous or heterogeneous)plz check first good luck

the transfer of heat by electromagnetic radiation is called thermal radiation . it is usually carried out by electromagnetic waves in an energy range just below the visible spectrum, which is the infrared range.

so the answer would be radiation.

: )