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प्रश्न
What are the elements.
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उत्तर
“Elements are pure substances made up of one kind of atoms and cannot be broken down into simpler substances.” 118 elements are there.
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संबंधित प्रश्न
Explain why All the elements of a group have similar chemical properties.
Name two elements in halogens.
The electronic configuration of an element T is 2, 8, 8, 1.
What is the group number of T?
Name an element of group 18 which can form compounds.
Give the symbol and valency of the following element and radical.
Hydrogen
In the modern periodic table, elements are arranged according to their ______
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 a similar structure to diamond.
Name the following metal:
A metal present in period 3, group 1 of the periodic table.
An element has 2 electrons in its N shell.
Is it a metal or a non-metal?
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?
