1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
ahrayia [7]
3 years ago
13

Task #3. Drawing the atomle structure of atoms.

Biology
1 answer:
lora16 [44]3 years ago
4 0

The representation of an element includes a superior number that indicates the massic number, and an inferior number that indicates the atomic number. We need to know that every atom is identified by its number of protons and neutrons. So,  

Representation ⇒ ᵃ X ₀

Where  

  • X is the element  
  • a is representing the massic number, which is defined as the sum of the number of protons and the number of neutrons.  
  • z is the atomic number, which is the number of protons ⇒ represented as  0 above

In electrically neutral atoms, the number of protons equals the number of electrons. This means that <em>the atomic number also indicates the number of electrons. </em>

We will call n to the number of neutrons, which equals a - z

When protons, neutrons, and electrons get together to form an atom, they lose part of their mass as energy. This is why the atomic weight is slightly inferior to the sum of masses.

So, what you need to know is that  

• Nº of protons = Atomic number → z  

• Nº of neutrons = Massic number - Atomic number → n = a - z  

• Nº of Electrons = Nº of protons = Atomic number → z

When representing these atom structures using the planetary model, there must be a nucleus surrounded by orbits. In the nucleus there are protons and neutrons. In the orbits, there are electrons in different energetic levels.

  • Nucleus → Protons + Neutrons → circle indicating number of P⁺ + N⁰
  • Orbits → Around the nucleus → Following the energy levels

The energy levels indicate how many electrons, e⁻, maximum must be placed per level -orbit- → seven levels

  1. K ⇒ 2e⁻
  2. L ⇒ 8 e⁻
  3. M ⇒ 18 e⁻
  4. N ⇒ 32e⁻
  5. O ⇒ 32e⁻
  6. P ⇒ 18e⁻
  7. Q ⇒ 8e⁻

So, the number of orbits drawn depends on the number of electrons.

Let us analyzetwo examples.

1) <u>CARBON </u>

Element representation ⇒ ¹⁴ C ₆      

• Massic number = 14  

• Atomic number = 6  

So, from this information we can assume that  

• Nº of protons = Atomic number → 6  

• Nº of neutrons = Massic number - Atomic number → 14 - 6 = 8  

• Nº of Electrons = Nº of protons = Atomic number → 6  

Representation -Planetary model-

  • Nucleus → Protons + Neutrons → 6 P⁺ + 8 N⁰
  • Orbits → Electrons → 6 e⁻ → We need to draw two levels
  1. K ⇒ 2e⁻
  2. L ⇒ 4 e⁻

<em>Note: In the attached files you will find the model.</em>

1) <u>SILICIUM</u>

Element representation ⇒ ²⁸ Si ₁₄    

• Massic number = 28  

• Atomic number = 14  

So, from this information we can assume that  

• Nº of protons = Atomic number → 14  

• Nº of neutrons = Massic number - Atomic number → 28 - 14 = 14  

• Nº of Electrons = Nº of protons = Atomic number → 14

Representation -Planetary model-  

  • Nucleus → Protons + Neutrons → 14 P⁺ + 14 N⁰
  • Orbits → Electrons → 14 e⁻ → We need to draw three levels
  1. K ⇒ 2e⁻
  2. L ⇒ 8 e⁻  
  3. M ⇒ 4 e⁻

<em>Note: In the attached files you will find the model.</em>

You might be interested in
Anatomy<br> Label each of the following structures or processes.
RSB [31]

Answer:

A - DNA

B - mRNA

C - nuclear pore

D - tRNA

E - ribosome

F - rRNA

Explanation:

<em>The entire structure illustrates the process of transcription and translation in a typical eukaryotic cell.</em>

The DNA (A) in the nucleus of the cell is first transcribed to mRNA (B). The mRNA produced is transported to the cytoplasm through the openings within the nuclear membrane - the nuclear pores (C). On getting to the cytoplasm, the mRNA binds to the ribosome (E) (carrying rRNA, F). The tRNA (D) carrying the specific anticodon for a particular codon on the mRNA then binds to the structure and the corresponding amino acid is released. A polypeptide bond is formed between subsequent amino acids and the ribosome moves along the mRNA chain until the translation process is complete.

3 0
3 years ago
Which of these structures forms a complete ring around the airway?hyoid bonetracheal cartilagecricoid cartilagethyroid cartilage
Lubov Fominskaja [6]

Answer: cartilage

Explanation: because it is not hard or soft but it still is bone and that is what your ears and nose is made of

8 0
3 years ago
Read 2 more answers
Gregory Mandel‘s work was in the area of?
Vsevolod [243]
The answer is C: Inheritance
4 0
3 years ago
Read 2 more answers
A. soil<br><br> B. air<br><br> C. plants<br><br> D. clouds
marissa [1.9K]
What is your question? I can help!
6 0
3 years ago
How could the pressure of a gas increase if temperature is constant?
Yakvenalex [24]

Answer:

Gay Lussac's Law - states that the pressure of a given amount of gas held at constant volume is directly proportional to the Kelvin temperature. If you heat a gas you give the molecules more energy so they move faster. This means more impacts on the walls of the container and an increase in the pressure.

Explanation:

5 0
3 years ago
Other questions:
  • Chlorophyll b absorbs in green wavelengths of light that chlorophyll a cannot absorb. in this respect, chlorophyll b acts as
    10·1 answer
  • How do mutations increase the genetic variation within a species?
    9·1 answer
  • what type of immunity provides lifetime protection for the body against a specific pathogen A incomplete immunity B active immun
    5·2 answers
  • Multicellular organisms can be organized into what other levels?
    12·1 answer
  • If the horse has 64 chromosomes In each of its body cells how many chromosomes will be in each gamete cells after meiosis
    14·1 answer
  • I really need this done right now!!!!!
    13·2 answers
  • 3.The term that is used to describe Earth’s orbit around the Sun is Earth’s. ______________________ (4 Points)
    7·1 answer
  • Pooppopopoopopopokjkkkjkkjkjkjkj
    5·1 answer
  • There is a new trend to focus on dopamine receptor sensitivity rather than on dopamine itself because
    14·1 answer
  • Which of the following BEST explains why Earth is tectonically active?
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!