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प्रश्न
In the nucleus of `""_20"Ca"^40`, there are ______
विकल्प
20 protons and 40 neutrons
20 protons and 20 neutrons
20 protons and 40 electrons
40 protons and 20 electrons
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उत्तर
In the nucleus of `""_20"Ca"^40`, there are 20 protons and 20 neutrons.
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संबंधित प्रश्न
Name the particle or particles you would expect to find in :
The nucleus of an atom
Fill in the blank
An _______ is electrically neutral.
Fill in the following blanks with suitable words :
In water, the proportion of oxygen and hydrogen is .............. by mass.
The electron shell ______ is nearest to the nucleus.
Draw diagrams representing the atomic structures of the following:
- Sodium atom
- Chlorine ion
- Carbon atom
- Oxygen ion
Elements X and Y have 1 and 7 electrons in their outermost shell respectively.
What will be the charge present of the molecule XY after chemical combination?
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.
Compound
Atoms of different elements having the same number of ______ are called isotones.
The smallest unit of an element is ______.
