4 Compared to the energy and charge of the electrons in the first shell of a Be atom, the electrons in the second shell of this

Question

4 years ago

10

4 Compared to the energy and charge of the electrons in the first shell of a Be atom, the electrons in the second shell of this

atom have
(1) less energy and the same charge
(2) less energy and a different charge
(3) more energy and the same charge
(4) more energy and a different charge

Chemistry

2 answers:

Korvikt [17] · Answer 1 · 2021-12-14T10:24:00+03:00

Korvikt [17]4 years ago

5 0

Moving the electron away from the nucleus requires energy, so the electrons in the outer shell will have more energy than ones in the inner shell. Electrons always have a charge of -1, so the charge in the inner and outer shell will be the same. Therefore the answer is 3

Papessa [141] · Answer 2 · 2021-12-14T11:56:50+03:00

The electrons in the second shell of this atom have (3) more energy and the same charge compared to the first shell

<h3>Further explanation </h3>

Bohr's atomic model has shown the energy levels of electrons in the path of the atomic shell

The greater the value of n (the atomic shell, the main quantum number), the greater the energy level

In normal circumstances, electrons fill the shell at the lowest energy level starting from the shell K, L M and then N

When an atom gets energy from outside, the electrons will absorb energy so it moves to higher energy. This situation is called excited

Electrons will return to the original path or a lower energy level because the excited state is unstable. In this condition, the electron will release energy

The electron energy at the nth path can be formulated:

$\rm En=\dfrac{-Rh}{n^2}$