Answer:
bbbbbbbbbbbbbbbbbbbbbbbbb
Bohr's model explained the position of the electron, proton, and neutron in the atom of the element. The energy at the n = 2 level of the atom will be - 3.40 eV.
<h3>What is the principal quantum number (n)?</h3>
The principal quantum number (n) has been the distance of the electron of that atom in the nucleus and its energy in the structure. It can also be said to define the size of the atomic orbit.
n = 2 is the first excited state whose energy is calculated as:
Eₙ = − 13.6 ÷ n² eV
E₂ = - 13.6 eV ÷ 2²
= -3.40 eV
Therefore, -3.40 eV is the energy of electron at n = 2.
Learn more about principal quantum numbers here:
brainly.com/question/14307071
#SPJ4
Answer:
A for me
Explanation:
I dont know what you mean by this as this is an opinon question
Answer:
5.21
Explanation: You can only have 3 digits, so you would round to the hundredths place
