In an electron dot diagram, the symbol for an element is used to represent
2 answers:
Answer : The correct option is, (A) the nucleus.
Explanation:
Lewis-dot structure : It shows the bonding between the atoms of a molecule and it also shows the unpaired electrons present in the molecule.
In the Lewis-dot structure the valance electrons are shown by 'dot'.
The representation of valence electrons of an atom by dots around the symbol of an element is said to be the electron dot symbol.
In an electron dot diagram, the symbol for an element is used to represent the nucleus.
For example :
As we know that arsenic has '5' valence electrons. So, the symbol (As) is used to represent the nucleus and valance electrons around the is represented by the 'dot'.
The Lewis-dot structure of As (arsenic) is shown below.
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A)
The magnitude of the capacitive reactance is given by
where
is the angular frequency
C is the capacitance
While the magnitude of the inductive capacitance is given by
where L is the inductance.
Since we want the two reactances to be equal, we have
So we find
B) 7449 rad/s
In this case, we have
is the inductance
is the capacitance
Therefore, substituting in the formula for the angular frequency, we find
C)
Now we can us the formulas of the reactances written in part A). We have:
- Capacitive reactance:
- Inductive reactance: