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mezya [45]
3 years ago
8

Is wind energy consistent or inconsistent

Chemistry
1 answer:
LuckyWell [14K]3 years ago
5 0
Inconsistent as it can vary from time to time.
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A fish tank measures 0.40 meter long by 0.20 meter wide by 0.30 meter high. What is the width of the tank in centimeters?
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A chemical reaction that has a positive δg is best described as _____.
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A chemical reaction that has a positive g is best described as endergonic.
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What substance is produced at the cathode during the electrolysis of a mixture of molten calcium bromide, cabr2(l), and molten m
Afina-wow [57]
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4 years ago
Read the given expression. X = number of protons − number of core electrons Which of the following explains the identity of X an
shepuryov [24]

<u>Answer: </u>The correct statement is X is the effective nuclear charge, and it increases across a period.

<u>Explanation:</u>

We are given that:

X = number of protons − number of core electrons

Effective nuclear charge is defined as the actual nuclear charge (Z = number of protons) minus the screening effect caused by the electrons present between nucleus and valence electrons. These electrons are the core electrons.

The formula used for the calculation of effective nuclear charge given by Slater is:

Z^*=Z-\sigma

where,

Z^* = effective nuclear charge

Z = atomic number or actual nuclear charge or number of protons

\sigma = Screening constant

The effective nuclear charge increases as we go from left to right in a period because nuclear charge increases with no effective increase in screening constant.

Hence, the correct answer is X is the effective nuclear charge, and it increases across a period.

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So what is the question asking exactly?
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