Advertisements
Advertisements
प्रश्न
Match the atomic number with the following:
An element of group 2.
विकल्प
19
15
8
4
2
Advertisements
उत्तर
4
APPEARS IN
संबंधित प्रश्न
Compare and contrast the arrangement of elements in Mendeleev’s periodic Table and the Modern Periodic Table.
Explain why, the noble gases are placed in a separate group.
What happens to the number of valence electrons in the atoms of elements as we go down in a group of the periodic table?
What is the main characteristic of the last elements in the periods of the periodic table? What is the general name of such elements?
Name the cation and the anion in the salt – calcium sulphate
Name the following:
The group of the Modern Periodic Table to which calcium [Ca2+] belongs.
State whether true or false. If false, correct the statement.
Lanthanides and actinides are kept at the bottom of the periodic table because they resemble each other but they do not resemble with any other group elements.
How does the property vary in periods and in groups?
The inert gas which lies in the third period is ______
A group of elements in the periodic table is given below (Boron is the first member of the group and Thallium is the last).
Boron, Aluminium, Gallium, Indium, Thallium
Answer the following question in relation to the above group of elements:
If the electronic configuration of aluminium is 2, 8, 3, how many electrons are there in the outer shell of thallium?
