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
disa [49]
3 years ago
8

What made Mendeleev certain that he should leave gaps in his table?

Chemistry
1 answer:
ser-zykov [4K]3 years ago
8 0

Answer:

Mendeleev left gaps in his periodic table because he knew that these elements existed, but had not yet been discovered. He believed that the elements would be eventually found and would fit perfectly into the gaps. Two such elements are Germanium and Gallium.

Explanation:

You might be interested in
Complete the structure of poly propane in the equation.
Paladinen [302]

n propene molecules == polymer (polypropene)

7 0
4 years ago
What liquid is the most vicious ?
Dmitry [639]
Viscosity is basically how thick a liquid is so pancake syrup would be the answer
6 0
3 years ago
Read the list of elements given below.
PtichkaEL [24]

Answer:

b All of them are highly reactive nonmetals

3 0
3 years ago
  complete and balance the following reactions ?   uo2+ +cr o^2- 7 ـــــــــــــــــــــ uo2+ +cr3+
ivanzaharov [21]
In order to <span>complete and balance the following reactions, you should add a Fe into it. So it will look like  uo2+ +cr o^2- 7 ـــــــــــــــــــــ uo2+ +cr3+Fe. The answer to the following given statement or missing answer is Fe. </span>
3 0
4 years ago
Read 2 more answers
Calcium oxide (CaO) can react with carbon dioxide (CO2) in a synthesis reaction. Select the most likely products of this reactio
ser-zykov [4K]

Answer: CaCO3 reaction.

Explanation: CaO and  combine together to result in the formation of calcium carbonate compound. we know it is a synthesis reaction.so we can conclude that the most likely products of Cao + co2 → CaCO3 reaction.

6 0
2 years ago
Other questions:
  • The U.S. Customary System is commonly referred to as the ______________________.
    11·1 answer
  • How many compounds can i make with Sodium Calcium Hydrogen oxygen Carbon and chlorine
    13·1 answer
  • If the percentage yield of NH3 is 80%, how many moles of NH3 are actually produced
    10·1 answer
  • using the equation 2h2+o2--&gt;2h2o, if 192g of oxygen are produced, how many grams of hydrogen must react with it
    8·1 answer
  • Problem PageQuestion Suppose an iron atom in the oxidation state formed a complex with three hydroxide anions and three water mo
    9·1 answer
  • How many total atoms are in 0.260 g of P2O5?
    14·1 answer
  • Which of the following is a possible application for discoveries made during ocean exploration?
    15·1 answer
  • How many formula units of CaSO4 are in 17g of CaSO4?
    7·1 answer
  • From the list of substances, identify each as a strong acid, strong base, or neither a strong acid nor a strong baseDrag the app
    11·1 answer
  • A mineral sample has a mass of 35 g. When it is dropped into a graduated cylinder with 25mL of water, the volume of the water ri
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!