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
bezimeni [28]
2 years ago
6

Mendeleev placed thallium (Tl) in the same group as lithium (Li), sodium (Na), potassium (K), rubidium (Rb), and cesium (Cs). Ho

wever, the modern periodic table doesn’t place thallium in this group. Use the periodic table to find the properties of thallium. Explain why Mendeleev might have grouped thallium in the same group as lithium and sodium. Also explain how thallium is different from the other five elements.
Chemistry
1 answer:
EastWind [94]2 years ago
4 0

Answer:

When observing how thallium reacts with the air of the earth's atmosphere, its hardness or resistance resembled sodium, it was not investigated further to classify it correctly

Explanation:

Now it is known that they contain different numbers of valence electrons and that thallium is a heavy metal like lead and that they have similar characteristics except for their melting point where thallium is higher.

You might be interested in
How is the AHfusion used to calculate the energy required to vaporize a
faust18 [17]
Hope u do well :) ik this maybe hard but you’ll get through it , the answer is D !
4 0
3 years ago
1. What does it mean for a substance to be soluble?​
Anni [7]

Answer:

Solubility is a chemical property referring to the ability for a given substance, the solute, to dissolve in a solvent. It is measured in terms of the maximum amount of solute dissolved in a solvent at equilibrium. ... Certain substances are soluble in all proportions with a given solvent, such as ethanol in water.

Explanation:

3 0
3 years ago
Read 2 more answers
According to kinetic-molecular theory, which of the following would not be considered an ideal gas? Check all that apply.
Vikki [24]

Answer:

are a gas at very low volumes, when gas particles are very close together

a gas at very low temperatures, when gas particles have very little kinetic energy

a gas with highly polar molecules that have very strong intermolecular forces

Explanation:

4 0
3 years ago
Read 2 more answers
Calculates the equivalent mass of calcium chlorate CA (CI03) 2
love history [14]

Answer:

207g

Explanation:

Given compound:

            Ca(ClO₃)₂

The equivalent mass can be derived by summing the molar masses of each atom

  Molar mass of Ca = 40

                            Cl  = 35.5

                            O  = 16

Now solve;

 Molar mass  = 40 + 2(35.5 + 3(16)) = 207g

3 0
2 years ago
Which statement is correct with respect to gross primary productivity
bezimeni [28]
Gross primary production and net primary production. Gross primary production is the amount of chemical energy as biomass that primary producers create in a given length of time.
8 0
3 years ago
Other questions:
  • What is the approximate pH of a .06 M solution of CH3COOH given that Ka= 1.78*10-5
    12·1 answer
  • What is a logical way that you could begin to investigate why your tire had low air pressure? Look to see if there is a hole in
    15·2 answers
  • A certain weak acid, ha, has a ka value of 6.0×10−7. calculate the percent ionization of ha in a 0.10 m solution.
    11·1 answer
  • Which of the following work mostly severaly affect a human population
    5·1 answer
  • Explain why the quantum number set (2, 2, -1, -½) is not possible for an electron in an atom.
    12·1 answer
  • When there are many people seeking the same job, this is known as a _____ of workers.
    10·2 answers
  • Convert 10erg into joule​
    8·1 answer
  • Which of the chemicals in the following chemical reaction is the acid?
    12·1 answer
  • Please help!!! due tomorrow and i’m really stuck!! thank you!
    14·1 answer
  • Which statements are wrong about atoms
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!