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
Which statement is an example of a scientific theory
kramer

electricity, chemistry, and astronomy

4 0
3 years ago
Read 2 more answers
Question 7: What conclusions can you make about how a change in the condition of the ocean affects the different species in cora
jek_recluse [69]
The change would most likely result in a dip in #
3 0
2 years ago
What is the allele number for the following sequence? (3pts)
uysha [10]

Answer:

what I don't understand what is the Ctcagt

8 0
3 years ago
Hemlocks are a common type of tree in the northern forests of the United States. In studying one forest, a forester noticed that
Vlada [557]

Answer:

b. making an observation and asking a question

Explanation:

In scientific method there need to be a situation to be study. In this description, the scientist first observed that in a certain region there is some kind of trees and the other variable is the great amount of deer.

After making different observations, and some research of other areas similar to the one that is study, she is asking what is the relation among the animals and the trees.

The next step will be to formulate a hypothesis using all the data and the two variables that she observed.

8 0
3 years ago
which of these features is most likely formed as a result of the movement of earth plates in the diagram?
aksik [14]

Answer:

A is the Answer

Explanation:

7 0
3 years ago
Other questions:
  • Fermentation is carried out regularly, and not only during oxygen emergencies, by what organisms?
    7·2 answers
  • Given two strings next to each other on a musical instrument, which string would produce a sound of a lower pitch? The string wi
    15·1 answer
  • 30 POINTS AND BRAINLIEST!!
    12·1 answer
  • Why do developed countries have lower growth rates than less-developed countries? higher birth rates lower death rates higher de
    7·1 answer
  • 7. Which type of transport below moves water through a selectively-permeable membrane from areas of greater concentration to are
    11·1 answer
  • Azotobacter A. forms endospores. B. forms cysts. C. fixes carbon dioxide. D. are used as an indicator of fecal pollution.
    15·1 answer
  • When energy is needed and adequate oxygen is available, pyruvate is converted to
    8·1 answer
  • If the statement is true, write true. If the statement is false
    10·1 answer
  • Which occurs just before a volcanic eruption?
    10·2 answers
  • How does nitrification occur in nature, starting from gaseous Nitrogen?​
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!