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प्रश्न
State true or false. If false, correct the statement.
The basic unit of an element is molecule.
विकल्प
True
False
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उत्तर
False
Correct statement: The basic unit of an element is atom.
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संबंधित प्रश्न
Write the names of the elements present in the:-
Glucose
Write the names of `("NH"_4)_2"SO"_4` compounds:
Fill in the blank:
Atoms are _____
Define: Relative atomic mass
What are orbits or shells ?
Name three non-metals/radicals which have valency -1, -2, and -3.
Define: Covalent bond
An atom has 13 protons and 14 neutrons.
How many electrons would be present in this atom ?
A certain particle ‘X’ has 17 protons, 18 electrons and 20 neutrons.
What is the charge on the particle ?
How many times is a proton heavier than an electron?
What is an atom ? How do atoms usually exist ?
Which of the following statement is correct about the atom of an element ?
How many atoms are there in exactly 12 g of carbon-12 element ? (C = 12 u)
Compare:
Chlorine atom and chloride ion, with respect to
Atomic structure
Electrical state
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.
A compound containing one atom of carbon and two atoms of oxygen is ______.
Define the following term with an example.
Element
Draw the structure of an atom and explain the position of the sub-atomic particles.
An atom of an element has no electron. Will that atom have any mass or not? Can an atom exist without electron? If so then give example.
Define the following term with an example.
Metal
______ is the smallest particle of an element.
The volume occupied by 1 mole of a diatomic gas at S.T.P is ______
Atoms of different elements having ______ mass numbers, but ______ atomic numbers are called isobars.
Which of the following has maximum number of atoms?
Lead is also known as plumbum.
What is the fundamental particle of an element?
