imagine a new species of bird was introduced to the same area as a population of native birds. what effects might the introduced
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<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:
where,
= effective nuclear charge
Z = atomic number or actual nuclear charge or number of protons
= 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.
Answer:
in 3 mole of
Explanation:
It is clear that in the given of
have
of
Therefore 3 moles of will have
of
Since 1 ion of anything is equivalent to
Therefore 3 moles of will have
of
Which is equivalent to
Thus 3 moles of gives
of
.