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Naily [24]
1 year ago
15

Iodine and tellurium were swapped by Mendeleev in the Periodic Table so that they were not in order of atomic weight. State the

type of atom that gives an explanation as to why order based on atomic mass is not always correct.
Chemistry
2 answers:
zmey [24]1 year ago
7 0

The example of Iodine and tellurium where iodine which had lesser atomic mass was placed before tellurium proved that order of the Periodic table based on atomic mass was not always correct.

<h3>Why did Mendeleev swap Iodine and tellurium in his Periodic Table so that they were not in order of atomic weight?</h3>

The periodic table as designed by Mendeleev was arranged such that the elements were arranged in order of increasing atomic mass.

However, in this case of tellurium and iodine, Mendeleev placed tellurium before iodine even though it had a greater atomic mass than iodine. This was because Mendeleev observed that elements with similar chemical properties were occurring in a regular pattern in the periodic table and iodine has similar chemical properties to bromine and chlorine before it.

Therefore, the case of Iodine and tellurium proved that arranging elements in the periodic table in order of increasing atomic mass was not always correct.

Learn more about Mendeleev periodic table at: brainly.com/question/2165846

#SPJ1

k0ka [10]1 year ago
5 0

Answer:

literally all you have to write to get the mark is the word isotopes

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How many moles are present in 45.0 g of lithium oxide (Li2O)?
BigorU [14]
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1 mole Li2O ---------- 30 g
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moles Li2O = 45.0 x 1 / 30

moles Li2O = 45.0 / 30

= 1.50 moles of Li2O 

hope this helps!


4 0
3 years ago
Consider the molecular structure for linuron, an herbicide, provided in the questions below. How many pi bonds are in the molecu
Sophie [7]

In the herbicide linuron whose structure is shown in the image attached, there are four pi bonds.

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In the herbicide linuron whose structure is shown in the image attached to this answer, there are four pi bonds which are easily spotted as double bonds in the structure.

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6 0
3 years ago
The positively charged particles found in the nucleus of an atom are called ______.
Vikentia [17]
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4 0
3 years ago
A compound is known to consist solely of carbon, hydrogen, and chlorine. Through elemental
OleMash [197]

Answer:

the empirical (lowest raios) is

C2H4Cl    

Explanation:

A compound is known to consist solely of carbon, hydrogen, and chlorine. Through elemental analysis, it was determined that the compound is composed of 24.27% carbon.

What is the empirical formula of this compound?

the compound has ONLY C, H, and Cl

the % Cl  = 100% - 24.27% -4.03% = 71.7%

in 100 gm, there are 71.7 gm Cl, 24.27 gm C, and 4.03 gm H

the number of moles are Cl=71.7/70.91 =1.01= ~ 1

                                          C = 24.27/12.0 = 2.02 =~ 2

                                           H = 403/1.01 = 3.97 =~   4

so   the empirical (lowest raios) is

C2H4Cl      

                                 

                               

3 0
3 years ago
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