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What are the merits of the Mendeleev’s periodic table?

Prediction of new elements : The existence and properties of elements that are similar to Boron/Aluminum/Silicon is predicted by Mendeleev. He left the gap after some elements and gave them hypothetical names such as Eka-Alumium/Eka-Silicon.

What are the merits and demerits of Mendeleev periodic?

Iv. Mendeleev’s arrangement helped to correct atomic masses of a number of elements.i. Mendeleev could not assign a correct position to hydrogen in the periodic table as hydrogen resembles alkali metals as well as halogens.

What are the merits of the periodic table?

ADVANTAGES OF THE PERIODIC TABLE: –

It is easier to remember the properties of an element if its position in the periodic table is known. The periodic table has made the study of chemistry systematic and easy. It acts as an aid to memory. The type of compounds formed by an element can be predicted by knowing it position in the periodic table.

What are the merits of Mendeleev’s periodic table short note by Brainly?

Merits of Mendeleev’s periodic classification are: He was the first one to arrange elements according to their atomic weights and proposed a periodic law. It could help determine the wrong atomic weight of elements known at that time. It predicted some undiscovered elements and left gaps for them.

What are the three demerits of Mendeleev’s table?

The demerits are: He did not gave place to isotopes. Position of rare earths and actinides could not be justified. Certain pairs of elements having higher atomic weights have been given position before the elements having lower atomic weights.

What are the advantages of Mendeleev’s periodic table brainly?

Advantages: He left some spaces in his periodic table and boldly predicted the existence of few elements like silicon, germanium and gallium. When noble gases were discovered can be kept in a separate group without disturbing the existing order.

What is the difference between merits and demerits?

Answer:

Merits allude to any situation, means or opportunity that is good for the accomplishment towards the ideal end. It alludes to the benefits or positive meaning of something.Demerits is the imprint or a trademark that is lacking and negligence of a thing, living or nonliving. It is against the favour of something that affects in a negative way.In the event that one is attempting to assess an ideological group, the person ought to be familiar with the benefits and disadvantages of the party.One ought to be familiar with the advantages and faults of the framework assuming one needs to make any meaningful difference with that thing.

What are the two merits of long form of periodic table?

Sachin Tyagi 31 Points 14 years ago Advantage of Long Form of Periodic Table :- The advantages of long form of periodic table are given below. i) The table is based on more fundamental property i.e. atomic number. ii) The correlates the position of elements with their electronic configuration more clearly.

Iii) The completion of each period is more logical. In a period as the atomic number increases, the energy shells are gradually filed up until an inert gas configuration is reached. iv) It eliminates the even and odd series of IV, V and VI periods of Mendleefs periodic table. v) The position of VIII group is also justified in this table.

All the transition elements have been brought in the muddle as the properties of transition elements are intermediate between s- and p-block elements. vi) Due to separation of two subgroups, dissimilar elements do not fall together. One vertical column accommodates elements with same electronic configuration thereby showing same properties.

1. Vii) The table completely separates metal and non metals.
2. Non metals are presented in upper right corner or the periodic table.
3. Viii) There is a gradual change in properties of the elements with increase in their atomic numbers i.e.8, 8, 18, 18 and 32 elements which indicates the capacity of various periods of the table.

ix) The greatest advantage of this periodic table is that this can be divided into four blocks namely s-, p-d- and f- block elements. x) This arrangement of elements is easy to remember and reproduce. Devansh 15 Points 4 years ago 1. The table is based on more fundamental property i.e. atomic number. ii) The correlates the position of elements with their electronic configuration more clearly. iii) The completion of each period is more logical. In a period as the atomic number increases, the energy shells are gradually filed up until an inert gas configuration is reached.

• Iv) It eliminates the even and odd series of IV, V and VI periods of Mendleefs periodic table.
• V) The position of VIII group is also justified in this table.
• All the transition elements have been brought in the muddle as the properties of transition elements are intermediate between s- and p-block elements.

vi) Due to separation of two subgroups, dissimilar elements do not fall together. One vertical column accommodates elements with same electronic configuration thereby showing same properties. vii) The table completely separates metal and non metals. Non metals are presented in upper right corner or the periodic table.

viii) There is a gradual change in properties of the elements with increase in their atomic numbers i.e.8, 8, 18, 18 and 32 elements which indicates the capacity of various periods of the table. ix) The greatest advantage of this periodic table is that this can be divided into four blocks namely s-, p-d- and f- block elements.

x) This arrangement of elements is easy to remember and reproduce.

Why the modern periodic table is better than the Mendeleev periodic table?

Modern periodic table also known as long form of periodic table has the atomic number of elements as the basis of classification,It is better than mendeleev’s periodic table in many respects because it had regarded atomic masses of element as the basis of classification which is not correct,Actually mass of an element is concentrated mainly in the nucleus of the atom and has very little to do with the properties in particular,Electrons involved in these and are linked with atomic numbers of the element.How many groups and periods are present in the long form of periodic table? : Modern periodic table also known as long form of periodic table has the atomic number of elements as the basis of classification,It is better than mendeleev’s periodic table in many respects because it had regarded atomic masses of element as the basis of classification which is not correct,Actually mass of an element is concentrated mainly in the nucleus of the atom and has very little to do with the properties in particular,Electrons involved in these and are linked with atomic numbers of the element.How many groups and periods are present in the long form of periodic table?

What are two limitations of Mendeleev’s?

Hint: The periodic table, also known as the periodic table of elements, is a tabular display of the chemical elements, which are arranged according to their atomic number, electron configuration, and regular occurring chemical properties. The structure of the table shows several periodic trends.

• Mendeleev used an idea of arranging the elements in the periodic table according to their increasing atomic masses and not atomic numbers.
• Complete step by step answer: According to Mendeleev’s theory, the physical and chemical properties of the elements are the periodic function of their atomic masses.

The trends occur at a regular interval of the occurrence of the atomic masses of the elements. Due to this, Mendeleev faced a great problem in placing the hydrogen in the periodic table. Indeed, the increasing order of atomic masses was also a problem as some elements whose atomic number is greater than the other but the atomic mass being less than the other created a great ambiguity.

1. The limitations of Mendeleev’s periodic table are: (i) Elements that show large variations in their physical and chemical properties were added to the same group of the periodic table.
2. Ii) Mendeleev could not fit hydrogen at a particular place in the periodic table.
3. Note: Sometimes this method of arranging the elements meant there were gaps in his horizontal rows or ‘periods’.

But instead of seeing this as a problem, Mendeleev thought it simply meant that the elements which belonged in the gaps had not yet been discovered. He was also able to work out the atomic mass of the missing elements, and so predict their properties.

What are two problems with Mendeleev’s table?

Demerits of Mendeleev’s periodic table: Certainly, no fixed position can be given to hydrogen in the Periodic table. There are three elements in the fourth, fifth, and sixth periods, the reason for which was not given. Isotopes were discovered long after Mendeléev had proposed his periodic classification of elements.

What are merits and demerits Class 10?

Difference between Merits and Demerits – Merits refer to any circumstance, means or opportunity that is favourable to the success towards the desired end. It refers to the advantages or favourable significance of something. Demerits refer to the mark or a characteristic that is in the issue of the deficiency and misconduct of a thing, living or nonliving.

Which of the following is a demerit of Mendeleev’s periodic table?

Mendeleev’s table was unable to locate the correct position of Hydrogen in its periodic table since it resembled alkali metals as well as halogens.