The answer is C. No all cells have cell walls. Prokaryotes don’t have a nucleus or chloroplast. Leaving C to be correct
Answer: Option (A) is the correct answer.
Explanation:
According to the Gibb's free energy conditions:
If
< 0, then reaction is spontaneous.
If
> 0, then reaction is non-spontaneous.
If
= 0, then reaction is equilibrium.
Since, the given reaction is
. It denotes that liquid state of fluorine is changing into gaseous state. And, the boiling point of fluorine is very low.
Therefore, at low and high temperature fluorine is a gas. Hence, the reaction is spontaneous in nature.
Thus, we can conclude that the statement at low temperature, the reaction is spontaneous and
< 0 and at high temperature, the reaction is spontaneous and
< 0, is correct.
Noble gases belong to group 18 of the periodic table. These elements are inert because they have their valence orbital shells as ‘full’ hence do not participate in reactions since they cannot share electrons. These elements have a pattern in their electron configuration. Their outer most orbital shells has 8 electrons (with the exception of 2 for helium).