B) nitrogen (N)
C) silicon (Si)
D) sulphur (S)
The element that has four total electrons in its outer P orbitals is
Sulphur (s) (answer D)
Sulphur is in group 16 and period 3 in the periodic table therefore Sulphur is in atomic number 16.
Sulphur (S) electronic configuration is 1S2 2S2 2P6 3S2 3P4 or [Ne] 3S2 3P4 therefore the 3P4 subshell of sulphur has only 4 electrons.
The best statement among the following which explains whether alchemy is a science or pseudoscience is "It is pseudoscience because each metal is known to be a unique element." Hence, Option (D) is correct.
Alchemy began to fully evolve into chemistry in the 17thcentury, with a greater emphasis on rational thought and experimentation and less emphasis on spirituality and mysticism.
The alchemists were never successful in changing lead into gold, but modernnuclear physics can accomplish this task.
Therefore , The best statement among the following which explains whether alchemy is a science or pseudoscience is "It is pseudoscience because each metal is known to be a unique element." Hence, Option (D) is correct.
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It boosts the loop's flux, which creates a voltage surrounding the loop and moves an electric current through the wire.
A stream of charged particles, such as electrons or ions, traveling through an electrical conductor or a vacuum is known as an electric current. The net rate of passage of electric charge through a surface or into a control container is used to calculate it.
Electrons are moving constantly in current electricity. Direct current and alternating current are the two types of current used in electricity. Electrons travel only in the direction of direct current. Direct current is produced by batteries. Electrons move in both directions during alternating current.
Thus, It boosts the loop's flux, which creates a voltage surrounding the loop and moves an electric current through the wire.
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b. neutral.
c. weakly basic.
d. strongly basic.
A solution with a pH of 8.0 is weakly basic. Thus ,the correct option is C.
The pH scale gives the measure of the acidity or basicity of a solution. It ranges from 0 to 14, where a pH of 7 is considered neutral. Solutions which have a pH less than 7 are acidic, while solutions which have a pH greater than 7 are basic.
In this case, since the pH is 8.0, which is greater than 7, the solution is basic. However, it is important to note that the basicity of the solution is weak, as it is only slightly above neutral.
For example, think of a pH of 8.0 as being similar to water from a freshwater lake. It's not strongly basic like bleach or ammonia, but it still has a slightly basic nature compared to a neutral solution.
Thus, the correct option is C.
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