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प्रश्न
Atoms of different elements having ______ mass numbers, but ______ atomic numbers are called isobars.
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उत्तर
Atoms of different elements having the Same mass numbers, but different atomic numbers are called isobars.
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संबंधित प्रश्न
Define:- Atom
What are orbits or shells ?
A certain particle ‘X’ has 17 protons, 18 electrons and 20 neutrons.
What is such a particle called ?
What is the usual symbol for (a) and electron (b) a proton, and (c) a neutron?
Fill in the following blanks with suitable words :
In water, the proportion of oxygen and hydrogen is .............. by mass.
Calculate the number of moles in 12.044 × 1025 atoms of phosphorus.
Match the pairs.
| Group 'A' | Group 'B' |
| a. Proton | i. Negatively charged |
| b. Electron | ii. Neutral |
| c. Neutron | iii. Positively charged |
State true or false. If false, correct the statement.
An atom is electrically neutral.
Assertion: An atom is electrically neutral.
Reason: Atoms have equal number of protons and electrons.
1 mole of Gold and Silver contain same number of atoms.
