What Are The Main Features Of Modern Periodic Table? - Fixanswer

1)The long form of periodic table consists of 7 periods. 2)These are numbered as 1,2,3,4,5,6 and 7 from top to bottom. 3)The first period consists of two elements . 4)The 2nd and 3rd period consists of 8 elements each, 4th and 5th consists of 18 elements each while the sixth period consists of 32 elements.

What are the two features of modern periodic table?

Elements are arranged in the increasing order of atomic numbers.
Elements in the modern periodic table are arranged in 7 periods and 18 groups.
Horizontal rows are called periods and vertical columns are called groups.

What are the advantages of modern 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. ...
The type of compounds formed by an element can be predicted by knowing it position in the periodic table.

What are the main features of modern periodic table Class 10?

Groups – There are 18 vertical columns in the periodic table. Each column is called a group. ...
Periods – In periodic table elements are arranged in a series of rows. Elements of the same period have the same number of electron shells.

Which is the shortest period in periodic table?

First period of periodic table is shortest period.

WHAT IS group in modern periodic table?

Group, in chemistry, a column in the periodic table of the chemical elements. In a group, the chemical elements have atoms with identical valence electron counts and identical valence vacancy counts. ... Groups are numbered from 1 to 18 .

How many groups are present in modern periodic table?

The s-, p-, and d-block elements of the periodic table are arranged into 18 numbered columns, or groups. The elements in each group have the same number of valence electrons.

What are the features of a periodic table?

The Periodic Table organizes the elements according to their similar chemical and physical properties . The Table has rows and columns. The vertical columns in the periodic table represent Groups. The horizontal rows in table represents Periods.

What are the features of Mendeleev’s periodic table?

In Mendeleev periodic table, vertical columns in the periodic table and horizontal row in the periodic table were named as groups and period respectively.
The periodic table is composed of seven horizontal rows or periods and is numbered between 1 to 7.

What are disadvantages of modern periodic table?

Position of hydrogen is not satisfactory, it can be placed either in group I or 17 group of the first period.
It fails to accommodate lathanides and actinides in the main body of the periodic table. These are kept separately at the bottom of the periodic table.

What are the limitation of modern periodic table?

The limitations of modern periodic table are: (a) Position of hydrogen: It could not assign a correct position to hydrogen in the table .

What are advantages and disadvantages of modern periodic table?

It is easy to remember and reproduce . The systematic grouping of elements into four blocks; s, p, d and f has made the study of the elements more simple. The position of some elements which were misfit on the basis of atomic mass is now justified on the basis of atomic number.

Which is the longest period?

The sixth period contains 32 elements ( Cs to Rn ) and is also known as the longest period.

Why 6th period is the longest period?

6th and 7th periods are longest elements due to the presence of inner transition elements . ... Thus, 6th and 7th periods are called the longest period in the periodic table as it contains 32 elements in it because of inner transition elements.

Which is the largest group in periodic table?

Therefore our answer is Group 1 has the maximum number of elements and therefore the largest or longest group in the periodic table. Let’s learn a little bit about the Group 1 elements. They are called the alkali metals because on reaction with the water they form alkali metals.