Answer:
1:Basic /2: acidic/ 3: neutral
Explanation:
IDK
The energy of a photon that would move an electron from level 2 to level 5 : B. 4.8 eV
<h3>Further explanation</h3>
The electron energy at the nth shell can be formulated:
<h3>En = -Rh / n²
</h3>
Rh = constant 2.179.10⁻¹⁸ J
So the electron transfer energy (ΔE)
ΔE = E final- E initial
energy at n=2(level 2) = -5.3 eV
energy at n=5(level 5) = -0.5 eV
So the energy absorbed :

PV = nRT (where P = pressure; V = volume; n = number of moles; R = gas constant; T = Temperature)
Moles of H₂ = mass of H₂ ÷ molar mass of H₂
= 6.0 g ÷ 2 g/mol
= 3.0 mol
To get the answer in atmospheres, let's convert C to K
25 °C ≡ 298 K
Now, based on the formula above
P = (nRT) ÷ V
P = (3.0 mol × (0.082 L · atm/mol · K) × 298 K) ÷ 73 L
≈ 1 .004 atm
Explanation:
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