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
Elena L [17]
3 years ago
7

What observations led to the periodic law? what observations led to the periodic law? observation that certain elements possess

such property as radioactivity observation that the all halogen elements have similar properties observation that the all metals have similar properties observation that the properties of elements recur and certain elements have similar properties?
Chemistry
1 answer:
kvv77 [185]3 years ago
7 0
HISTORICAL INTRODUCTION.1<span> EVER since the establishment of the atomic theory by Dalton and Berzelius it was felt among chemists that there must be some relation between the atomic weights of the different elements and their properties. It was recognized very early that there exist groups of elements possessing related chemical and physical properties, and one of the earliest attempts to bring out this point is due to Dobereiner. In 1829 he tried to show that “many elements may be arranged in groups ()f three, in each of which the middle element has an atomic weight equal or approximately equal to the mean of the atomic weights of the two extremes.” As illustrations of this method of arrangement may be mentioned the following groups: Li, Na, K; Ca,Sr,</span>
You might be interested in
What is the term for a reaction in which a substance gains an electron
Scorpion4ik [409]

Every redox reaction consists of two parts, the oxidation and the reduction. Each one separately is called a half - reaction. During the redox reaction there is a transfer of electrons from the substance being oxidized to the substance being reduced.

7 0
3 years ago
Inertia increases as an object's_______increases.
lilavasa [31]

Answer:

<h2><em><u>MASS</u></em></h2>

Explanation:

Inertia increases as an object's <u>Mass</u> increases.

3 0
3 years ago
What happens when you put sugar into vinegar
maria [59]
Nothing. Many salad dressings are a mixture of sugar and vinegar.
5 0
3 years ago
Identify the variables in this hypothesis.
Zanzabum

Answer:

AJJJJJJJJJJJJJJ

Explanation:

5 0
3 years ago
Read 2 more answers
15g of FeCI3 is dissolved in 450 mL of solution. What is the concentration of [CI-]?
storchak [24]

The concentration of [CI-] : 0.617 M

<h3>Further explanation</h3>

FeCl₃ dissolved in 450 mL of solution(will dissociate )

Reaction

FeCl₃⇒Fe³⁺+3Cl⁻

  • mol FeCl₃(MW=162,2 g/mol)

\tt \dfrac{15}{162.2}=0.0925

  • mol Cl⁻ :

\tt \dfrac{3}{1}\times 0.0925=0.2775

  • molarity of Cl⁻ :

\tt \dfrac{0.2775}{0.45}=0.617~M

7 0
3 years ago
Other questions:
  • Where does the electrical energy produced through wave energy come from?
    12·1 answer
  • Neeru is looking at her kids backpack and wants to compare their masses. What is the best tool Neeru can use to find the mass of
    8·1 answer
  • What sequence of DNA bases bond with the DNA base sequence ATGT
    7·1 answer
  • Which part of the mantle is still a solid but flows thick , heavy liquid? A.asthensosphere B.crust C.core D.lithosphere
    14·2 answers
  • Q: If the average speed of a species of tortoise is 0.36 km/h, what is that speed in cm/s?
    13·1 answer
  • What are the properties of elements??​
    15·2 answers
  • The half-life of sodium-24 is 15 days. A laboratory technician measures out a 72 g sample. Approximately how many grams of sodiu
    12·1 answer
  • Assign oxidation numbers to the element in each of the following compounds. Remember an oxidation number is for one atom of the
    13·1 answer
  • 14) For the reaction P4(s) + 6 Hz(9) — 4 PH3(g)
    13·1 answer
  • How many oxygen atoms are present in 2.35 Mol of calcium phosphate?​
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!