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
Alekssandra [29.7K]
3 years ago
12

How is the modern periodic table different from mendeleev’s periodic table?

English
1 answer:
guajiro [1.7K]3 years ago
4 0
The main differences are: Mendeleev's periodic table is based on atomic mass. Modern periodic table is based on atomic number. ... In Mendeleev's periodic table noble gases were not placed (as they are not discovered at that time). Not only that it also looks different but that’s a minor touch.
You might be interested in
For the sentence, “The doctor helped the injured man and kept him from standing or speaking,” which is a transitive verb? A.help
aliya0001 [1]
The answer would be A, helped. A transitive verb is an action verb, which is a verb where someone does something physically or mentally, with an indirect object right after, or someone who receives the action of the verb. So, the action verb in the sentence is helped and the indirect object is the injured man, which makes the transitive verb "helped." Hope this helps!
7 0
3 years ago
Use the following words and use them in a sentence.
sineoko [7]
1. an air of melancholy surrounded him
2. an air of melancholy surrounded him
3. the decree guaranteed freedom of assembly
4. Rose's parents emigrated to Australia
5. the patriots had to capitulate to the enemy forces
7. all ivory trafficking between nations is prohibited
8. they offer sacrifices to the spirits
7 0
3 years ago
How can sequencing help you when you are summarizing a text?
Kaylis [27]

<u><em>Answer:</em></u>

<h3><u><em>I think its C. All of the above</em></u></h3>

<u><em>Explanation:</em></u>

4 0
3 years ago
Can man or adjust Mars environment to make it more suitable for human habitation?How?​
andrey2020 [161]
Answer:
Reduce the amount of CO2 in the air. ...
Increase the planetary temperature. ...
Make the planet breathable. ...
Construct plants for generating super-greenhouse gases made of complex combinations of carbon,chlorine and flourine. To successfully make Mars Earth-like, we would need to raise temperatures, have water stably remain in liquid form and thicken the atmosphere. ... The only greenhouse gas on the Red Planet that's abundant enough to provide significant warming is carbon dioxide (CO2), they noted. Man cannot alter the environment in Mars to make it more suitable for human habitation. It is virtually and logistically impossible to do so for various reasons. For this to work, you need massive changes in the environment which is not possible with what we have today. Transforming Mars into a life-friendly world doesn't have to be a herculean planet-wide effort. Humanity could make patches of the Red Planet habitable relatively cheaply and efficiently by placing thin layers of silica aerogel on or above the Martian surface, a new study suggests. Proponents of terraforming Mars propose releasing gases from a variety of sources on the Red Planet to thicken the atmosphere and increase the temperature to the point where liquid water is stable on the surface. These gases are called “greenhouse gases” for their ability to trap heat and warm the climate. Scientists have considered placing Mylar disks, with a diameter of 155 miles and a weight of 200,000 tons, to reflect sunlight onto Mars and heat the surface. The idea is that over many years, the rise in temperature would release greenhouse gasses.
4 0
3 years ago
Tentative: he was very tentative toward the instructions he's being given by the lady is that a noun
Ilia_Sergeevich [38]
What are you asking us to do. What question do you need to be answered.
3 0
3 years ago
Other questions:
  • Compare and contrast the ways that “Birmingham Sunday” and “Ballad of Birmingham” each responds to the church bombing and the th
    12·1 answer
  • In "the yellow wallpaper," which part of the room commands most of the narrator's attention?
    12·2 answers
  • 4. Which rule would help you punctuate the bold portion of this sentence correctly? “You have a visitor who would like to see yo
    15·1 answer
  • How did the monarchy's power change from charles I to George I?
    9·1 answer
  • Lee is posting a status update on his social media page expecting why he has chosen to adopt his new dog from the animal shelter
    14·2 answers
  • Helppp
    6·1 answer
  • Tashiana was in a hurry to complete her speech for a public speaking contest. During her research on world hunger, she found som
    12·1 answer
  • Change into proper passive or active sentences - I won the race
    7·1 answer
  • Which person is showing media literacy?
    6·2 answers
  • Is this a sequel??
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!