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emmasim [6.3K]
3 years ago
15

The equation NaCl →Na +Cl is a ______ reaction.

Chemistry
2 answers:
hjlf3 years ago
8 0
You are looking at a decomposition reaction because the original compound is being broken into its individual elements.<span />
astraxan [27]3 years ago
5 0
<span>The equation NaCl →Na +Cl is a decomposition reaction since sodium chloride is broken down into its simpler components. Decomposition reaction involves the breaking down of larger compounds into a simpler one. It usually needs energy to occur.</span>
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The effective nuclear charge is the amount of charge experienced by an electron taking into account any shielding effects from o
Agata [3.3K]

Answer:

The nuclear charge increases from boron to carbon, but there is no additional shielding( that is no additional shells).

Explanation:

First of all, we must know the electron configuration of carbon and boron.

Boron- 1s2 2s2 2p1

Carbon- 1s2 2s2 2p2

Moving from boron to carbon, the effective nuclear charge increases without a corresponding increase in the number of shells. Remember that shielding increases with increase in the number of intervening shells between the outermost electron and the nucleus. Since there isn't an increase in shells, boron experience a lower screening effect.

From

Zeff= Z- S

The Z for carbon is 6 while for boron is 5 even though both have the same number of screening electron S(4 screening electrons). Hence it is expected the Zeff(effective nuclear charge) for boron will be less than that of carbon.

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3 years ago
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Answer:

four covalent bonds

Explanation:

A carbon atom would form 4 covalent bonds.

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In a carbon atom, we have no lone pair of electrons and 4 unpaired electrons. When these 4 electrons are shared with those of other atoms, they produce a complete octet which perfectly mimics the noble gases.

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