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प्रश्न
What is meant by the 'atomic number of an element'?
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उत्तर
An atomic number of an element is the number of protons in the nucleus of an atom.
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संबंधित प्रश्न
In Milikan’s experiment, static electric charge on the oil drops has been obtained by shining X-rays. If the static electric charge on the oil drop is - 1.282 × 10-18C, calculate the number of electrons present on it.
Multiple Choice Questions
The sub atomic particle with negative charge is
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The diagram represents an isotope of hydrogen [H]. Answer the following:
Atomic no. = 1
Mass no. = 1
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The elementary particles such as protons and neutrons are collectively called ______.
A group of elements in the periodic table is given below (Boron is the first member of the group and Thallium is the last).
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