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
Katen [24]
3 years ago
14

Please help me urgently is for a test and I need to do this homework and i don’t understand

Chemistry
1 answer:
andre [41]3 years ago
8 0

Answer:

Explanation

TIP:

group 1= 1 valence

group 2= 2valence

group 3- 12 vary depending on the charge

group 13= 3 valence

group 14= 4 valence

group 15= 5 valence

group 16= 6 valence

group 17= 7 valence

group 18= 8 valence (a full shell) they don't bond they're noble gases

This should tell u the valences :) it says the group on the top of your picture just look at the small text.

The dot structure:

1. write the symbol for example Zinc is Zn.

Zinc has 2 valence electrons (you can figure out the valence of transition metals by doing the electron config but that's painful and annoying so i'm just going to tell u it)

Imagine the symbol Zn has a border on it like a square. each side can ONLY have 2 dots MAXIMUM!! therefore its dot structure will look like:

:Zn   (it doesn't matter what side you put them on, if it were 3 valence just add a lonely dot on an empty side and so on so forth)  

Hope i helped

You might be interested in
4. How does finding density of an object help you identify the material that each block is made of?
san4es73 [151]

Answer:

You can identify an unknown substance by measuring its density and comparing your result to a list of known densities. Density = mass/volume. . You divide the mass by the volume and compare the density to a list of known densities.

3 0
3 years ago
True or false: Gravity plays an important role in the formation of stars.
KiRa [710]

Answer:

the the answer iss ( true )

8 0
3 years ago
What energy source is least expensive ?
Elden [556K]

Answer:

Solar Energy.

Explanation:

There is more solar radiation hitting their surface, which means they can produce more electricity. Solar energy is more valuable in places with expensive electricity. If two solar panel systems in different cities have the same energy output, savings will be greater in the city with the highest kWh prices.

3 0
3 years ago
The following image shows an owl swooping to grab a mouse.
Sloan [31]

Answer:

Predator-prey

Explanation:

Hope this helps.

4 0
2 years ago
Read 2 more answers
The average blood volume in the human body is about 4.9 L. Convert this volume to cubic centimeters (cm3).a. milliliters (mL)b.
CaHeK987 [17]

Answer:

a. 4900 mL; b. 4900 cm³ c. 4.9x10⁻³  m³

Explanation:

1 L = 1 dm³

4.9 L = 4.9 dm³

1 dm³ = 1000 cm³  → 4900 cm³

1 cm³ = 1 mL  (4900 mL)

1 dm³ = 1x10⁻³ m³ → 4.9x10⁻³  m³

6 0
3 years ago
Other questions:
  • Given the balanced equation:
    12·2 answers
  • If a substance decreases in temperature from 270K to 220K, the kinetic energy of that substance increases.
    13·2 answers
  • Gay is the appropriate mass of 25cm^3 of silver, if the density is 10.5 g/cm^3
    5·1 answer
  • If an automobile is able to travel 264 km on 23.3 L of gasoline, what is the gas mileage in miles per gallon?
    7·1 answer
  • 2Na + Cl2 → 2NaCI<br> How many grams of NaCl will be produced from 33.0 g of Na and 34.0 g of Cl.?
    6·1 answer
  • Which of the following choices is a sign that a glacier was present at one point in history?
    8·1 answer
  • I want to tell my crush that I like him but we are virtual and I don't have a phone so I was going to email him. any advance on
    9·1 answer
  • Please help someone
    15·1 answer
  • Plants are able to produce special chemicals at the right time and place.
    10·1 answer
  • What is kept the same in a controlled experiment
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!