Answer:
i would assume that it would be (a)
Explanation:
The Sun generates its energy by nuclear fusion
NUCLEAR FISSION is when the heavy atom is split
fusion energy is scientifically feasible. Plasma conditions that are very close to those required in a fusion reactor are now routinely reached in experiments
mass gets lost is nuclear fusion
so (a) is the most accurate
Answer:
The grating spacing is 
Explanation:
From the question we are told that
The wavelength is 
The angle is 
The order of the spectrum is 
Generally in grating grating the condition for maxima to occur is

where d is the grating spacing
making d the subject of the formula

Substituting values


Answer:
and
are ionization isomers.
and
are linkage isomers.
Explanation:
Ionization isomerism occur when a ligand that is bound to the metal center exchanges places with an anion or neutral molecule that was originally outside the coordination complex
Thus
and
are ionization isomers.
Linkage isomerism is the existence of coordination compounds that have the same composition differing with the connectivity of the metal to a ligand.
Thus
and
are linkage isomers.
The answer is D I hope this helps