Calculating the n=1 Energy Level of B4+ Ion

In summary, the energy of the n = 1 energy level in the B4+ hydrogen-like ion is -340.0, which is obtained by plugging in Z = 5 and n = 1 into the equation En=Z squared X -13.60 /n squared. The negative sign remains as it was originally given.
  • #1
jessiewills
7
0
What is the energy of the n = 1 energy level in the
B4+ hydrogen-like ion?
I need it to 4 significant figures...
I know the equation is

En=Z squared X -13.60 /n squared... however I can't work out the answer to four significant figs
 
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  • #2
Why not? You have 13.60 to 4 significant figures. What is Z? What is n?
 
  • #3
Z= 5 for the B and the n= 1 for the energy?
 
  • #4
Sounds good. So what's the answer?
 
  • #5
-340...but its needed in 4 significant figures? and i really don't understand how i can get that too it...im dumb :/
 
  • #6
You started with 13.6, but it was 13.60 to 4 significant figures, so what is 340 to 4 significant figures?
 
  • #7
340.0...really? that simple also do i need to keep it to minus or does it change?
 
  • #8
It's that simple. Yes, it is negative as you originally had it.
 

FAQ: Calculating the n=1 Energy Level of B4+ Ion

What is the equation for calculating the n=1 energy level of B4+ ion?

The equation for calculating the n=1 energy level of B4+ ion is E = -13.6 eV x (Zeff)^2 / n^2, where E is the energy, Zeff is the effective nuclear charge (in this case, it is 4 for B4+ ion), and n is the principal quantum number (in this case, it is 1).

How do I determine the value of Zeff for B4+ ion?

Zeff is the effective nuclear charge, which takes into account the shielding effect of inner electrons. For B4+ ion, the value of Zeff is equal to the atomic number of boron (5) minus the number of electrons in the ion (4), which is equal to 1.

What is the value of the Rydberg constant used in the equation?

The Rydberg constant used in the equation is -13.6 eV, which is a conversion factor for converting energy in electron volts (eV) to joules (J).

Can the equation be used to calculate energy levels for other ions?

Yes, the equation can be used to calculate energy levels for any ion with a positive charge. You would just need to determine the value of Zeff for the specific ion.

How accurate is the calculated energy level compared to the actual energy level?

The calculated energy level using the equation is an approximation and may have a small margin of error compared to the actual energy level. Other factors such as electron-electron interactions and relativistic effects may also affect the accuracy of the calculation.

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