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प्रश्न
Atoms of different elements having the same number of ______ are called isotones.
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उत्तर
Atoms of different elements having the same number of Neutrons are called isotones.
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संबंधित प्रश्न
Define:- Molecule
Write electronic configuration of oxygen, fluorine, sodium, silicon, argon.
Name the particle or particles you would expect to find in :
The orbit of an atom
An atom of element E contains 3 protons, 3 electrons and 4 neutrons :
(a) What is its atomic number?
(b) What is its mass number?
(c) Write the electronic configuration of the element E.
(d) State whether element E is a metal or non-metal. Why?
(e) What type of ion, cation or anion, will be formed by an atom of element E? Why
(f) Write the symbol of the ion formed by an atom of element E.
(g) What could element X be?
The electron shell ______ is nearest to the nucleus.
Match the pairs.
| Group 'A' | Group 'B' |
| a. Proton | i. Negatively charged |
| b. Electron | ii. Neutral |
| c. Neutron | iii. Positively charged |
Define the following term with an example.
Non-metal
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?
Write any two observations which support the fact that atoms are divisible.
What is the fundamental particle of an element?
