Answer:
n₁ = 2
Explanation:
The Rydberg formula is given by
1/λ = Rh x (1/n₁² - 1/n₂² ) where Rh = Rydberg´s constant , and n₁ and n₂ are the energy levels of the transitions involved.
The highest energy line in a series will happen when n2 tends to infinity, and then in
1/λ = Rh x (1/n₁² - 1/n₂² ) the term 1/n₂² in the limit is zero
1/λ = Rh x 1/n₁²
So lets solve for n₁² :
n₁² = Rh x λ = 109,737 cm⁻¹ x 365 x 10 ⁻⁷ cm = 4.00
n₁ = √4.00 = 2
This the value for the Balmer series.
Answer: Oxygen
Oxygen is atomic number 8 on the periodic table, which means that it has 8 protons. It is a gas.
The average molar mass of an atom is equal to the summation of the molar mass of the isotopes multiplied by their relative abundance. In this case, we substitute and use the formula:
MW ave = 49.946044 amu*0.04345 + <span>51.940508 amu * 0.83789 + </span><span> 52.940649 amu * 0.09501 + </span><span>53.93880 amu * 0.02365 = 51.966 amu.
Answer is C</span>
Answer:
false
Explanation:
Because in a periodic table they are not located below each other and therefore do not have the same number of electrons.
