Flourine
Explanation:
The element F has a high negative (ΔeqHө) but not so high IE1 . Therefore, it is the least reactive non-metal.
Explanation:
Initial mass of the isotope 90-Sr in baby= 1.00 μg
Formula used :
where,
= initial mass of isotope
N = mass of the parent isotope left after the time, (t)
= half life of the isotope = 28.1 years
= rate constant
a) Time taken by the sample, t = 18 years
0.6415 μg will remain after 18 years.
b) Time taken by the sample, t = 70 years
0.1779 μg will remain after 70 years.
put cool water over it not cold and cover the burrn
The characteristic that is not descriptive of C, would be D. It forms bonds with only itself. It forms bonds with almost all other nonmetals, present, like H,O,N, etc.
Alkene is the group of hydrocarbon molecules that contains at least one double bond. So, A, C and D would be named ending with -ene.
