The closest realm to Asgard, it is home to light elves 1 point
Niflheim
Midgard
Alfheim
Jotunheim

Asample of radium-226 will decay 1/4 of its original amount after 3200years. what is the half-life of radium-226?

Energy defines the different "states" of matter. in no more than 3 sentences, describe the amount of kinetic energy that each of the 3 states of matter possesses and relate that to the atom/molecular motion of each "state".

Which statement accurately represents the arrangement of electrons in bohr’s atomic model?