Advertisements
Advertisements
प्रश्न
State any five features of modern periodic table.
Advertisements
उत्तर
- All the elements are arranged in the increasing order of their atomic number
- The horizontal rows are called periods. There are seven periods in the periodic table.
- The elements are placed in periods based on the number of shells in their atoms
- Vertical columns in the periodic table starting from top to bottom are called groups. There are 18 groups in the periodic table
- Based on the physical and chemical properties of elements, they are grouped into various families.
APPEARS IN
संबंधित प्रश्न
How many rows and columns are there in the modern periodic table?
Is it possible to have an element having atomic number 1.5 placed between hydrogen and helium?
Which element has two shells, both of which are completely filled with electrons?
In the modern Periodic Table, why does cobalt with higher atomic mass of 58.93 appear before nickel having lower atomic mass of 58.71?
Fill in the blank:
The horizontal rows in the periodic table are called _____________.
Give the symbol and valency of the following element and radical.
Hydroxide
Choose an element from period 3 of modern periodic table that matches the description given below in instance. Give a reason for your choice.
It has same valency as Lithium.
The maximum number of electrons that can be accommodated in s, p,d, and f subshells are ______.
Explain the position of hydrogen in the periodic table.
Answer the following in respect of element \[\ce{_16^32S}\].
To which group and period does it belong?
