Light penetration plays a crucial role in the oxygen concentration in the ocean. Light can penetrate up to 50 to 100 meters of the ocean water, leaving high concentration of oxygen at ocean's depth.
The deep oceans are high in the concentration of oxygen. The rates of consumption of oxygen at such depth are low. The phytoplanktons are found in the photic zones of oceans, where these organisms perform photosynthesis. Phytoplanktons are not observed in the deep layers of ocean, therefore, the oxygen consumption will be low. The photosynthetic organisms yield oxygen as a by product, and use up carbon dioxide.
Therefore, the oxygen concentration at deep ocean levels will be higher.
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in the atom.
B. Electronegativity increases because there are more valence
electrons in the atom.
C. Electronegativity decreases because the valence electrons are
farther from the nucleus.
D. Electronegativity decreases because the size of the nucleus is
bigger.
Electronegativity decreases because the valence electrons are farther from the nucleus. Hence, option C is correct.
Electronegativity is a chemical property that describes the tendency of an atom or a functional group to attract electrons toward itself.
From top to bottom down a group, electronegativity decreases. This is because atomic number increases down a group, and thus there is an increased distance between the valence electrons and nucleus, or a greater atomic radius.
Important exceptions to the above rules include the noble gases, lanthanides, and actinides.
Electronegativity decreases because the valence electrons are farther from the nucleus. Hence, option C is correct.
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(2) largely empty space
(3) neutrons
(4) protons
Subatomic particles can usually pass undeflected through an atom because the volume of an atom is composed of largely empty space. The correct option is (2).
Subatomic particles are those particles that are present inside the atoms. They are charged particles. They are electrons, neutrons, and protons. Subatomic particles constitute the atom.
Subatomic particles known as electrons constantly revolve around the atomic nucleus of every atom. These particles are the furthest from the atom's nucleus and are negatively charged in nature.
Protons and neutrons, for example, are subatomic particles that are found in the atom's nucleus. While neutrons don't have any net charge, protons are positively charged particles.
Thus, the correct option is (2) largely empty space.
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the reduced substance is Cl2.