Advertisements
Advertisements
प्रश्न
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?
Advertisements
उत्तर
If the electronic configuration of aluminium is 2, 8, 3, then 3 electrons are there in the outer shell of thallium.
APPEARS IN
संबंधित प्रश्न
How does the tendency of elements to gain electrons change as we move from left to right in a period? State the reason of this change.
Consider the following elements:
Na, Ca, Al, K, Mg, Li
Which of these elements belong to the same period of the periodic table?
What is the number of elements is 1st period the modern periodic table?
Name two elements in each case:
Transition element
Answer the following in respect of element `31/15 P `
To which group and period does it belong?
The electronic configuration of an element T is 2, 8, 8, 1.
What is the group number of T?
“Hydrogen occupies a unique position in Modern Periodic Table”. Justify the statement.
Select the appropriate options and complete the following paragraph:
(metals, non-metals, metalloids, four, seven, s-block, p-block, d-block, f-block).
On the basis of electronic configuration, elements in the modern periodic table are classified Into ______ blocks. Groups 1 and 2 elements are included in ______ and all these elements are metals. (except Hydrogen). Group 13 to 18 elements are included in ______. This block contains metals, non-metals and metalloids. Group 3 to 12 elements are included in ______ and all the elements are ______ elements shown at the bottom of the periodic table i.e. Lanthanides and Actinides constitute ______ and all these elements are metals.
Match the atomic number with the following:
A rare gas.
Give reason for the following:
Inert gases do not form ion.
