Does Magnesium or Carbon have similar properties to Beryllium ? Which one ?

Flourine is found to undergo 10% radioactivity decay in 366 minutes determine its halflife

Question 3(multiple choice worth 4 points) (04.04 lc) what does it mean when an element is reduced? it empties a valance shell, reducing its atomic radius. it gains electrons, reducing its overall charge. it increases electronegativity, reducing its ability to bond. it loses electrons, reducing its electron number.

What must be in balance for temperatures to remain constant?