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Usimov [2.4K]
3 years ago
13

For a hydrogen atom, which electronic transition would result in the emission of a photon with the highest energy? for a hydroge

n atom, which electronic transition would result in the emission of a photon with the highest energy? 7f â 5d 2p â 6d 3s â 4p 5p â 3s
Chemistry
2 answers:
vagabundo [1.1K]3 years ago
6 0

The transitions which fall to the lowest principle position release the greatest energies. In this case, this would be the transition from the 5p to the 3s orbital (a Paschen transition).

Hope this helps!

zmey [24]3 years ago
5 0

Answer:

2p←6d

Explanation:

The energy ordering of atomic orbitals is based on the Aufbau principle and can be represented in the increasing order of energy as follows:

1s, 2s, 2p, 3s, 3p, 4s, 3d, 4p, 5s, 4d, 5p, 6s, 4f, 5d, 6p, 7s, 5f, 6d, 7p, 8s ..............

During electronic transitions, energy is absorbed when an electron gets excited from a lower to a higher energy level whereas energy is released in the form of photons or light when electrons fall back from a higher to a lower level.

Hydrogen atom has only one electron in its valence shell. Based on the Aufbau energy ordering as show above, the energy difference between the 6d and 2p orbital is the highest. Therefore, photon associated with the 6d-2p transition will have the highest energy.

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6.07 grams is the theoretical yield of calcium phosphate (Ca₃(PO₄)₂).

<h3>How we calculate mass from moles?</h3>

Mass of any substance can be calculated by using moles as:

n = W/M, where

W = required mass

M= molar mass

Given chemical reaction is:

3Ca(NO₃)₂ + 2Na₃PO₄ → 6NaNO₃ + Ca₃(PO₄)₂

From the stoichiometry it is clear that:

3 moles of Ca(NO₃)₂ = produce 1 mole of Ca₃(PO₄)₂

Given mass of Ca(NO₃)₂ = 96.1g

Mole of Ca(NO₃)₂ = 96.1g/164g/mol = 0.5859moles

So, 0.5859 moles of Ca(NO₃)₂ = produce 0.5859×1/3 = 0.0196 moles of Ca₃(PO₄)₂

Required mass of Ca₃(PO₄)₂ will be calculated by using moles as:

W = 0.0196mole × 310g/mole = 6.07 grams

Hence, 6.07 grams is the theoretical yield of calcium phosphate.

To know more about moles, visit the below link:

brainly.com/question/15373263

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