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प्रश्न
Name the particle or particles you would expect to find in :
The nucleus of an atom
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उत्तर
The nucleus of an atom : protons and neutrons
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संबंधित प्रश्न
Write the names of the elements present in the following compound.
Common salt
Name three non-metals/radicals which have valency -1, -2, and -3.
Write electronic configuration of oxygen, fluorine, sodium, silicon, argon.
What does the word ‘atom’ mean?
Fill in the blank
An _______ is electrically neutral.
Fill in the blank
An excess of electrons produces a ________ charge.
How is the size of an atom indicated ?
Draw diagrams representing the atomic structures of the following:
- Sodium atom
- Chlorine ion
- Carbon atom
- Oxygen ion
Draw the diagrams representing the atomic structures of the following: Neon
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.
State true or false. If false, correct the statement.
The basic unit of an element is molecule.
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.
The volume occupied by 1 mole of a diatomic gas at S.T.P is ______
Does the solubility of a substance change with temperature? Explain with the help of an example.
A sample of vitamic C is known to contain 2.58 ×1024 oxygen atoms. How many moles of oxygen atoms are present in the sample?
The smallest unit of an element is ______.
The ______ are combination of atoms of various elements or the same element.
The first scientific theory about atoms was given by J J. Thomson.
