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sweet-ann [11.9K]
2 years ago
14

Write the advantages of modern periodic table write as more as you can and don't copy the same thing​

Chemistry
1 answer:
Tema [17]2 years ago
3 0

Answer:

the advantages of modern periodic tables are given below and explained.

  1. position of hydrogen:since hydrogen has the least atomic number i.e 1 ,it is kept in group 1 of modern periodic table, but still controversial due to its. dual characteristics since it shows the characteristics of borh group 1 and group 17.
  2. position of isotopes :isotopes are element having the same atomic number but different atomic weight . Without any doubt all isotopes of one element and kept in one place.
  3. position of lanthanide and acnitinides: element of Lanthanides series and element of Actinides series are kept below the main block of the periodic table as they have different properties from other elements.
  4. correction of periodic law: some elements do not obey mendeleev periodic law , but when they are arranged according to atomic number they obey the modern periodic law.
  5. position of alkali metals and coinage metals : in modern periodic table , alkali metal are kept in group IA and coinage metals are in group.

hope this helped you☺️

any confusion then comment it and let me know.

actually as I say these points say that the modern periodic table is better than mendeleev periodic table so, don't get confused.

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Answer:

(D) greater than the energy stored in the bonds of the products.

Explanation:

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In exothermic reactions, the change in energy; ΔH less than zero. That is, they are negative.

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For ΔH to have a negative value, it means the energy of reactant must be greater than the energy of products.

This means the correct option is;

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From the given information, the mixture of oil and vinegar is an example of a heterogeneous mixture.

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