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
meriva
3 years ago
6

How many valence electrons does group 18 have

Chemistry
2 answers:
Rus_ich [418]3 years ago
8 0

Answer:

group 18 has 8 valence electrons, that's why they are stable.

nalin [4]3 years ago
8 0

8!

Explanation:

You're looking at the very last column, right? Noble gases are known for their stability because their valence shells are full! Lucky for you, all you have to do to know the number of valence electrons is look at the column number and take ignore the 1! 16 becomes 6, 18 becomes 8.

You might be interested in
What is 1,839,100 in scientific notation
ludmilkaskok [199]

1,839,100 x 10^6

blah blah 20 characters

its times (x) 10 to the 6th power

8 0
3 years ago
What is the molarity of a solution in which 0.0142 mole of Mn2(SO4)3 is dissolved in 26ml of water
valina [46]

Answer:

.546 M

Explanation:

.0142 M / .026 = .546 M

6 0
2 years ago
Na2O +<br> H20<br> NaOH<br> yeah
kodGreya [7K]

Answer:

<h3>Na2O + H2O → 2NaOH</h3>

<h3>explanation:</h3>

Sodium oxide react with water to produce sodium hydroxide.

8 0
3 years ago
Read 2 more answers
One problem with using pesticides to control insects on crops is that the insects can develop resistance to the chemicals. How i
USPshnik [31]

Answer:

Explanation:

Overuse of antibiotics leads to bacteria's resistance against our drugs. This is increasing at an alarming rate and the reason is that overuse of antibiotics kills bacteria that lack the "resistance" gene or gene that can help them survive the antibiotics (similar is the case for insects that die to insecticides). But, some bacteria can have random mutations in their gene that can help them survive the antibiotic (similar is the case for some insects that can survive the insecticide), thus the surviving bacteria give rise to next generation of bacteria that are resistant to the given antibiotic (similar to how insects that survive the insecticide give birth to new insects that are resistant to insecticide too). Soon, every generation adds new antibiotic resistant bacteria (or new insecticide resistant insects in the case of insects) which is dangerous for all of life on this planet. Therefore, both are similar in the sense that new generations of these organisms will be resistant to our weapons against them.

3 0
3 years ago
How can the planting of new trees help reduce climate change?
ira [324]

Answer:

A.

Explanation:

CO2 is bad and helps reduce many things. It is a great way to prevent climate change. Basically, it gets rid of bad air.

- Hope that helps! Please let me know if you need further explanation.

3 0
3 years ago
Other questions:
  • How many carbon atoms are there in 45g of carbon?
    5·1 answer
  • In virginia and some other parts of the world, water has carved vast caverns out of underground limestone deposits. water, howev
    6·1 answer
  • Please Hurry!!<br><br> Answer File Below!
    14·1 answer
  • Determine the mass of tin produced from 0.211 moles of hydrogen gas
    5·1 answer
  • If the solubility of a gas is 7.5 g/L at 404 kPa pressure, what is the solubility of the gas when the pressure is 202 kPa? Show
    8·1 answer
  • A gas at constant volume has a pressure of 3.20 atm at 300. K. What will be the pressure of the gas at 290. K?
    6·1 answer
  • What is the formula of Potassium chloride?​
    9·2 answers
  • Kipps appratus is for what?​
    13·1 answer
  • What is the periodic table organized by?
    8·1 answer
  • The shadow zone exists because:
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!