Answer:
The correct options are: a. the number of additional neutrons of an isotope is too large; d. the number of additional neutrons of an isotope is too small
Explanation:
The chemical elements that have the same number of protons in the nucleus but different number of neutrons are known as isotopes. Isotopes can be stable or unstable.
The isotope having an unstable nucleus, due to the presence of additional neutrons in the nucleus of the atom, is known as a radioisotope.
Also, chemical elements that have atomic number greater than 83 have unstable nuclei and thus they are called radioisotopes.
Answer:
Russia had the largest army and Germany had the
largest navy
Explanation: The numbers show that that the answer above would be correct.
Answer
Accelerates algal growth and reduces oxygen.
Explanation eutrophication is the nutrient induced increase in phytoplankton productivity.
Answer:
A. Saudi Arabia
Explanation:
a country located in the Middle East.
Answer:
southern Russia
Explanation:
Tamerlane's battles with the Golden Horde in the 14th century in southern Russia, weakened the Mongol hold in that region. This allowed Russian vassal states to gain power but unable to completely unify, the Russian prince remained vassals of the Mongols until 1480.
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