3 years ago

How do you represent a shared pair of electrons when drawing the Lewis structure of a covalent bond

Chemistry

1 answer:

nataly862011 [7]3 years ago

6 0

Answer: Each pair of shared electrons is a covalent bond which can be represented by a dash.

Explanation:

In a Lewis dot structure, the central atom can share electrons through bonds with the surrounding atoms, and this can look like a dash between the atoms.

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The edge length of the unit cell of KCl (NaCl-like structure, FCC) is 6.28 Å. Assuming anion-cation contact along the cell edge,

Mila [183]

Answer:

1.33 Å

Explanation:

Given that the edge length , a of the KCl which forms the FCC lattice = 6.28 Å

Also,

For the FCC lattice in which the anion-cation contact along the cell edge , the ratio of the radius of the cation to that of anion is 0.731.

Thus,

$\frac {r^+}{r^-}=0.731$ .................1

Also, the sum of the radius of the cation and the anion in FCC is equal to half of the edge length.

Thus,

$r^++r^-=\frac {a}{2}$ ...................2

Given that:

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To find,

$K^+\ (r^+) = ? \dot{A}$

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$1.731\ r^+=0.731\times \frac {6.28}{2}$

<u>Size of the potassium ion = 1.33 Å</u>

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3 years ago

When writing a formula for a compound having a transition metal in it, _____.

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Answer:

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Explanation:

This is so that one would know which Transition metal is being used. For example copper (II) would be Cu²+

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