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प्रश्न
Select the correct answer to the statement given below:
The basic unit of matter is not capable of independent existence.
पर्याय
Molecule
Orbits
Atom
Valency
Radical
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उत्तर
Atom
APPEARS IN
संबंधित प्रश्न
TRUE \ FALSE
Elements combine in definite proportions to form compounds.
Define:- Atom
Give two examples for each of ionic and covalent bond.
Who originated the word ‘atom’ ?
Name the particle or particles you would expect to find in :
The nucleus of an atom
A certain particle ‘X’ has 17 protons, 18 electrons and 20 neutrons.
What is the mass number of X?
Write the full form of IUPAC.
What are the building blocks of matter ?
How many times is a proton heavier than an electron?
Deduce from the datum provided.
| Datum | To deduce |
| \[\ce{_11^23Na}\] | Neutron number |
| \[\ce{_6^14C}\] | Mass number |
| \[\ce{_17^37 Cl}\] | Proton number |
Compare:
Chlorine atom and chloride ion, with respect to
Atomic structure
Electrical state
Elements X and Y have 1 and 7 electrons in their outermost shell respectively.
Which element will lose electron?
State the meaning of the term – (a) atom, (b) molecule, (c) radical – with a suitable example.
Rewrite the given sentence in correct form.
Elements contain two or more kind of atoms and compounds contain only one kind of atom.
Draw the structure of an atom and explain the position of the sub-atomic particles.
Define the following term with an example.
Compound
Define the following term with an example.
Non-metal
The number of atoms present in a molecule is called its ______.
______ is a substance that is made up of three oxygen atoms chemically combined.
What are the 3 most abundant atoms on the earth?
