Which element is in Group 2 and Period 7 of the Periodic Table? A)
radium
B)
manganese
c)
magnesium
D)
Radon

A) Radium

i don't think that group 2 has period 7, it has only up to period 6 so it's probably Radium :))

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.

: )

answer///carbon;