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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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Hospital patients are administered oxygen from an pressurized
VashaNatasha [74]

Answer:

32000atm

Explanation:

Using Boyle's law equation;

P1V1 = P2V2

Where;

P1 = initial pressure (atm)

P2 = final pressure (atm)

V1 = initial volume (

V2 = final volume (L)

According to the question below:

P1 = 160.0 atm

P2 = 3.0 atm

V1 = 600L

V2 = ?

Using P1V1 = P2V2

160 × 600 = 3 × V2

96000 = 3V2

V2 = 96000/3

V2 = 32000atm

5 0
3 years ago
Neutral atoms contain equal numbers of A protons and electrons. B protons and neutrons. C electrons and neutrons. D protons, ele
Verdich [7]

<u>Answer:</u>

<u>For 1:</u> The correct answer is Option A.

<u>For 2:</u> The correct answer is Option B.

<u>For 3:</u> The correct answer is Option C.

<u>Explanation:</u>

<u>For 1:</u>

Atomic number is defined as the number of electrons or number of protons that are present in a neutral atom. It is represented as Z.

Z = Atomic number = Number of electrons = Number of protons

Mass number is defined as the sum of number of protons and number of neutrons present in an atom. It is represented as A.

A = Mass number = Number of protons + Number of neutrons

Hence, the correct answer is Option A.

  • <u>For 2:</u>

The isotopic representation of an atom is: _Z^A\textrm{X}

where,

Z = Atomic number of the atom

A = Mass number of the atom

X = Symbol of the atom

We are given:

An isotopic representation of beryllium atom:  _4^9\textrm{Be}

Thus, the number '4' represents the atomic number of beryllium, number '9' represents the mass number of beryllium atom.

Hence, the correct answer is Option B.

  • <u>For 3:</u>

In CO compound:

Mass of oxygen = 16 g

Mass of carbon = 12 g

In CO_2 compound:

Mass of oxygen = 32 g

Mass of carbon = 12 g

Thus, the ratio of mass of oxygen in CO_2 and CO is:

CO_2:CO=32:16=2:1

Hence, the correct answer is Option C.

3 0
3 years ago
What is 694,563,239 rounded to the nearest thousand
lina2011 [118]
694,563,239 rounded to the nearest thousand is 694,563.
 
It's because the first digit from the right is for ones, second for tens, third for hundreds and fourth for thousands and that's the one that we should take a closer look at. You can round it either to 3 or 4, depends on the digit of hundreds. In this case 3239 is clearly closer to 3000 than 4000, that's why we round it to 694,563, not 694,564.
6 0
3 years ago
Read 2 more answers
What kind of chemical do you use to remove old polish for customer who has artificial nails?
Gwar [14]
Non-acetone polish remover
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3. What is the mass of an object with a volume of 4 L and a density of 1.25 g/mL?
ch4aika [34]

Answer:

5000g

Explanation:

mass= density × volume

Since the unit of density here is g/mL, we need to convert the volume to mL.

1L= 1000mL

4L= 4 ×1000 = 4000 mL

Mass of object

= 1.25 ×4000

= 5000g

3 0
3 years ago
Read 2 more answers
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