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Zinaida [17]
3 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]3 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]3 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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sashaice [31]

Answer:

It get thicker beacause the mid ocean

Explanation:

Because when it gets moved back the heat rises and it builds up to be thicker.

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2 years ago
How would you arrange the objects below from greatest to least volume?
ikadub [295]

Answer:

A balloon

A bottle of soda

A rock

A water bottle

Explanation:

4 0
4 years ago
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A reading shows a pressure measurement of 43 in. Hg. What is the equivalent pressure in psi? A. 5.73 psi B. 2223.13 psi C. 26.32
oksian1 [2.3K]
43 inHg = 43 inHg*2.54cm/in = 109.22cmHg * 10 mm/cm = 1092.2 mmHg


14.7 psi = 760 mmHg

1092.2mmHg * 14.7psi / 760 mmHg = 21.13 psi

Answer: option D. 21.13 psi
7 0
4 years ago
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The isomerization of methylisonitrile to acetonitrile (CH3NC(g) ???? CH3CN) is first order in CH3NC. The rate constant for the r
Hoochie [10]

Answer:

The half life is     H_{1/2}= 7333.3sec

Explanation:

   The half life of a first order  reaction is mathematically represented as

                          H_{1/2} = \frac{0.693}{Rate Constant }

 Substituting   9.45 * 10^{-5}s^{-1}  for the rate constant

                         H_{1/2} = \frac{0.693}{9.45*10^{-5}}

                                 H_{1/2}= 7333.3sec

5 0
3 years ago
A 25.0-mL sample of 0.150 M hydrazoic acid, HN3, is titrated with a 0.150 M NaOH solution. What is the pH after 13.3 mL of base
tamaranim1 [39]

Answer:

pH ≅ 4.80

Explanation:

Given that:

the volume of HN₃ = 25 mL = 0.025 L

Molarity of HN₃ = 0.150 M

number of moles of HN₃ = 0.025 × 0.150

number of moles of HN₃ =  0.00375  mol

Molarity of NaOH = 0.150 M

the volume of NaOH = 13.3 mL = 0.0133

number of moles of NaOH = 0.0133× 0.150

number of moles of NaOH = 0.001995 mol

The chemical equation for the reaction of this process can be written as:

HN_3 + OH- ---> N^-_{3} + H_2O

1 mole of hydrazoic acid react with 1 mole of hydroxide to give nitride ion and water

thus the new number of moles of HN₃ = 0.00375 - 0.001995 = 0.001755 mol

Total volume used in the reaction =  0.025 +  0.0133 = 0.0383  L

Concentration of HN_3 = \dfrac{0.001755}{0.0383} = 0.0458 M

Concentration of N^{-}_3 = \dfrac{ 0.001995 }{0.0383} = 0.0521 M

GIven that :

Ka = 1.9 x 10^{-5}

Thus; it's pKa = 4.72

pH =4.72 +  log(\dfrac{ \ 0.0521}{0.0458})

pH =4.72 + log(1.1376)

pH =4.72 + 0.05598

pH =4.77598

pH ≅ 4.80

3 0
3 years ago
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