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प्रश्न
What is atomic number?
उत्तर
The number of electrons or protons in an atom is called the atomic number of that atom. It is represented by the letter Z.
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संबंधित प्रश्न
Fill in the blanks.
Isotopes are the atoms of ______ element having the ______ atomic number but ______ mass number.
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Match the atomic numbers 4,8,10,15 and 19 with the following:
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Match the atomic numbers 4,8,10,15 and 19 with the following:
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Elements X, Y, Z have atomic numbers 6, 9 and 12 respectively. Which one:
- forms anion – negative ion;
- forms cation – positive ion;
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The No. of electrons in the outermost shell of the atom of an inert gas ______.
‘Z’ is denoted by ______.
