Use the periodic table to determine the electron configuration for zinc (Zn) and technetium (Tc) in noble-gas notation.
2 answers:
Answer:
Zinc is a d block element with atomic number 30 has 30 electrons. The nearest noble gas is argon with atomic number of 18 and has 18 electrons.
Technetium is a d block element with atomic number 43 has 43 electrons. The nearest noble gas is krypton with atomic number of 36 and has 36 electrons.
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Answer:
1
Explanation:
Using the Rydberg formula as:
where,
λ is wavelength of photon
R = Rydberg's constant (1.097 × 10⁷ m⁻¹)
Z = atomic number of atom
n₁ is the initial final level and n₂ is the final energy level
For Hydrogen atom, Z= 1
n₂ = 2
Wavelength = 410.1 nm
Also,
1 nm = 10⁻⁹ m
So,
Wavelength = 410.1 × 10⁻⁹ m
Applying in the formula as:
Solving for n₁ , we get
n₁ ≅ 1