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Zinaida [17]
2 years ago
5

Which answer helps to explain why carbon atoms tend to make 4 covalent bonds? which answer helps to explain why carbon atoms ten

d to make 4 covalent bonds? the valence shell needs 8 electrons. the first electron shell has 4 orbitals. the carbon nucleus has 4 protons. all of the above. none of the above; carbon makes 3 covalent bonds?
Chemistry
2 answers:
Kay [80]2 years ago
8 0

Carbon-12 has the following electron configuration: 1s2-2s2-2p2. As seen in the configuration, the right answer is: the first electron shell has 4 orbitals.


Genrish500 [490]2 years ago
3 0

Carbon atoms tend to make 4 covalent bonds because the valence shell needs 8 electrons. For atoms to be stable, they must have filled outermost energy shells called valence shells. This is called the octet rule. Only noble gases (Group 8) elements have naturally filled valence shells which makes them stable elements. All other atoms tend to lose, gain, or share electrons to get the same electron configuration as these noble gases. Metals easily lose their electrons to non-metals which are readily accepting electrons. The bond that results from this transfer of electrons is called an ionic bond. Non-metals tend to share their electrons with other non-metals forming covalent bonds.

FURTHER EXPLANATION

<em>The first electron shell has 4 orbitals. </em>

<u>FALSE</u> The distribution of the electrons in the carbon atom is shown in the following electron configuration:  

 1s^2 \ 2s^2 \ 2p^2

The coefficients of the letters indicate the electron shell and the superscript tells the how many electrons occupy the orbitals. For carbon there are only two electron shells with electrons: electron shell 1 which has the s orbital and electron shell 2 with the s and three p orbitals.  

Therefore, <u>carbon only has one orbital in the first electron shell. </u>

<u> </u>

<em>The carbon nucleus has 4 protons. </em>

<u>FALSE</u> The number of protons in an atom gives it its unique identity. The proton count is given by the atomic number. The atomic number of C is 6. Therefore, <u>it has 6 protons in its nucleus. The atom with 4 protons is Beryllium (Be). </u>

<em>All of the above</em>

<u>FALSE </u> Two statements above are not true.

<em>Carbon makes 3 covalent bonds </em>

<u>FALSE</u> <u>Carbon forms 4 covalent bonds</u> because it can share 4 unpaired electrons with other atoms. It may form single, double. Or triple covalent bonds with other C atoms.

LEARN MORE  

• Ionization Energy brainly.com/question/2153804

• Atomic Number brainly.com/question/1446926

• Ionic Compound brainly.com/question/7007192

Keywords: octet rule, valence electrons, electron configuration

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What name is used to describe the H-N-H group?
mamaluj [8]

Answer:

an amine group

Explanation:

Hope that helped :)

5 0
2 years ago
in a candy factory, the nutty chocolate bars contain 22.0% by mass pecans. If 5.0 kg of pecans were used for candy last Tuesday,
zysi [14]
22.0 is the same as saying that in 100 grams of a chocolate bar, there are 22.0 grams of pecans. or to make it easier because of this problem- 100 Kilograms of a chocolate bar, there is 22.0 Kg of pecans. we can use this as a conversion factor (what is used to convert a value to another value. 

conversion factor---> 22.0 kg of pecan= 100 kg of chocolate bar
Note: remember this, what you are converting from goes in the denominator, what you converting to goes in the numerator. 

5.0 Kg of pecan (100 Kg of chocolate bar/ 22.0 Kg of pecan)= 23 Kg of chocolate bar


7 0
2 years ago
In the first step of glycolysis, the given two reactions are coupled. reaction 1:reaction 2:glucose+Pi⟶glucose-6-phosphate+H2OAT
dmitriy555 [2]

Answer: Reaction 1 is non spontaneous.

Explanation:

According to Gibb's equation:

\Delta G=\Delta H-T\Delta S

\Delta G = Gibbs free energy  

\Delta H = enthalpy change

\Delta S = entropy change  

T = temperature in Kelvin

When \Delta G = +ve, reaction is non spontaneous

\Delta G= -ve, reaction is spontaneous

\Delta G= 0, reaction is in equilibrium

For the given reaction 1: glucose+Pi\rightarrow glucose-6-phosphate+H_2O \Delta G=+13.8kJ/mol

As for the reaction 1 , the value of Gibbs free energy is positive and thus the reaction 1 is non spontaneous.

6 0
2 years ago
What is the concentration of x2??? in a 0.150 m solution of the diprotic acid h2x? for h2x, ka1=4.5??10???6 and ka2=1.2??10???11
lutik1710 [3]
The first dissociation for H2X:
                        H2X +H2O ↔ HX + H3O
initial                0.15                     0      0
change             -X                     +X      +X
at equlibrium 0.15-X                  X        X
because Ka1 is small we can assume neglect x in H2X concentration
     Ka1      = [HX][H3O]/[H2X]
4.5x10^-6 =( X )(X) / (0.15)
X = √(4.5x10^-6*0.15) 
∴X = 8.2 x 10-4 m
∴[HX] & [H3O] = 8.2x10^-4
the second dissociation of H2X
        HX + H2O↔ X^2 + H3O
    8.2x10^-4          Y         8.2x10^-4
Ka2 for Hx = 1.2x10^-11
Ka2       = [X2][H3O]/[HX]
1.2x10^-11= y (8.2x10^-4)*(8.2x10^-4)
∴y = 1.78x10^-5
∴[X^2] = 1.78x10^-5 m


4 0
2 years ago
The piece of iron that miguel measured had a mass of 51.1 g and a volume of 6.63 cm 3 . what did miguel calculate to be the dens
likoan [24]
Given:
Mass, m = 51.1 g
Volume, V = 6.63 cm³

By definition, 
Density = Mass/Volume
              = (51.1 g)/(6.63 cm³)
              = 7.7074 g/cm³

In SI units,
Density = (7.7074 g/cm³)*(10⁻³ kg/g)*(10² cm/m)³
              = 7707.4 kg/m³

Answer: 7.707 g/cm³ or 7707.4 kg/m³

4 0
2 years ago
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