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प्रश्न
Define the following term:
Atom
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उत्तर
An atom is the smallest particle of an element which retains its chemical identity in all physical and chemical changes.
संबंधित प्रश्न
Why is it not possible to see an atom with naked eyes?
If bromine atom is available in the form of, say, two isotopes `""_35^79Br (49.7%)" and """_35^81Br (50.3%)`, calculate the average atomic mass of bromine atom.
Write the names of the elements present in the:-
Glucose
Fill in the blank
An ion with negative charge is called _______
Name three non-metals/radicals which have valency -1, -2, and -3.
Give two examples for each of ionic and covalent bond.
What are the building blocks of matter ?
Name the unit in which the radius of an atom is usually expressed.
What value has been given to the mass of this reference atom ?
The electronic configuration of an element Z is 2, 8, 8.
(a) What is the atomic number of the element?
(b) State whether element Z is a metal or a non-metal.
(c) What type of ion (if any) will be formed by an atom of element Z? Why?
(d) What is special about the outermost electron shell of the atom of this element?
(e) Give the name and symbol of element Z.
(f) Name the group of elements to which Z belongs.
Draw the electron dot structure of this compound.
Select the correct answer to the statement given below:
The smallest particle of a substance – capable of independent existence and which retains the characteristics of the substance.
The electronic structure [configuration] of fluorine can be written as 2, 7. In a similar way give the electronic configuration of phosphorus
A compound containing one atom of carbon and two atoms of oxygen is ______.
The smaller particles found in the atom is called ______.
In all atoms of an element
The volume occupied by 4.4 g of CO2 at S.T.P ______
The graphite refill used is pencil is made of element called ______.
The smallest unit of an element is ______.
