The outer electron in magnesium is excited by absorbing the heat energy from the N=1 stage to higher energy levels when it starts to drop back down to the N=2 level it losses energy in the form of visible light this is part of the Balmer series
hope that helps
Answer:
.5 M
Explanation:
molarity = moles / liters
2.5/5 = .5 M
Answer:
1 mol of K
Explanation:
The reaction is: 2K + Cl₂ → 2KCl
2 moles of potassium react with 1 mol of chlorine to make the salt, potassium chloride
If you see the stoichiometry from reactants, 2 moles of K need 1 mol of Cl₂ to react, so 1 mol of Cl₂ needs 2 moles of K, to react too.
We can make a rule of three, to reach the answer:
1 mol of Cl₂ needs 2 moles of K to react
Then, 0.5 moles of Cl₂ must react with (0.5 . 2) / 1 = 1 mol of K
Electron Configuration is the distribution of electrons of an atom or molecule in an atomic or molecular orbitals.
So Na, or Sodium has 11 electrons, so the number should add up to 11
Na: 1s² 2s² 3p⁶ 3s¹
Hope this helps!
