The statement correct about bonding is the release of energy in bond formation, and is exothermic. Thus, option C is correct.
The bonds have been defined as the sharing of electrons between atoms for the stabilization and forming compounds. The formation and breaking of the bond results in the absorption and release of the energy.
<h3>Endothermic and Exothermic reaction</h3>
The reaction in which the energy has been released has been termed as exothermic reaction. The reaction in which energy is absorbed is termed as endothermic system.
The bonds are stable, and to break the bond energy has to be provided to the system. The energy will result in the delocalization of electrons and thereby breaking of bonds.
Since energy has been absorbed by the system during breaking of bonds, the reaction has been an endothermic reaction.
The formation of the bond has been releases the energy in the system and is an exothermic reaction. Thus, option C is correct.
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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.
Answer:
C
Explanation:
it is genetics of the environment
Answer:
an element.
Explanation:
When all the atoms contain a nucleus with the same amount of protons then each atom is classified as the same element. Hence multiple atoms and a larger quantity of atoms of the same element is still just the same single element.
