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प्रश्न
Name two particles found inside the nucleus. What are they collectively called ?
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उत्तर
Protons and Neutrons. Mass number.
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संबंधित प्रश्न
TRUE \ FALSE
Elements having a tendency to accept electrons are called metals
Define:- Radicals
Write the names of the elements present in the:-
Glucose
Give the charge and the mass of an electron, proton and neutron present in an atom ?
Name three non-metals/radicals which have valency -1, -2, and -3.
Write electronic configuration of oxygen, fluorine, sodium, silicon, argon.
Who originated the word ‘atom’ ?
What does the word ‘atom’ mean?
A certain particle ‘X’ has 17 protons, 18 electrons and 20 neutrons.
What is the atomic numebr of X ?
Fill in the blank
If an atom gains an electron, it is called an _______
What value has been given to the mass of this reference atom ?
Which of the following statement is correct about the atom of an element ?
Give scientific reason.
All the mass of an atom is concentrated in the nucleus.
Draw the diagrams representing the atomic structures of the following: Neon
Select the correct answer to the statement given below:
Imaginary path around the nucleus of an atom in which electrons revolve.
Define the following term with an example.
Metal
______ is the smallest particle of an element.
The number of atoms present in a molecule is called its ______.
1 mole of Gold and Silver contain same number of atoms.
A change in the physical state can be brought about
