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Wewaii [24]
1 year ago
9

the existence of a vacancy in a crystal decreases the energy of the material i. not enough information to determine ii. false ii

i. true
Chemistry
1 answer:
enot [183]1 year ago
6 0

iii. True. The existence of a vacancy in a crystal decreases the energy of the material.

One of the scientific disciplines called crystallography examines how the atoms in a solid crystal are arranged. When molecules are linked together in a regular way, these crystals are created.

The mechanical, physical, and optical properties of a material can alter when crystal flaws are present. The strength of the material can be impacted by a flaw.

An irregularity in the atoms' regular geometrical arrangement within a crystalline material is referred to as a crystal defect. These flaws are caused by the solid being deformed, cooling quickly from a high temperature, or being exposed to high-energy radiation (such as X-rays or neutrons). because the vacancy cause defects and the crystal structure is disturbed this causes a decrease in energy.

To know more about vacancy visit the link:

brainly.com/question/14937309?referrer=searchResults

#SPJ4

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# of Valence electrons in I      =  7
# of Valence electrons in I      =  7
                                               ---------
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2) Draw Mg as a central atom surround it by two atoms of Iodine.

3) Connect each Iodine atom to Mg, and subtract two electrons per bond. In this case we will subtract 4 electrons from total valence electrons. i.e.

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                                              ----------
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slavikrds [6]

<u>Answer:</u> The average speed of the runner is 6.618 miles/hr

<u>Explanation:</u>

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To calculate the average speed of the runner, we use the equation:

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