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प्रश्न
Match the atomic numbers 4,8,10,15 and 19 with the following:
Element with 6 valence electrons
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उत्तर
Atomic number 8
Electronic configuration (8): 2,6
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संबंधित प्रश्न
If number of electrons in an atom is 8 and number of protons is also 8, then
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- What is the charge on the atom?
Explain the Mass number with example.
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Match the atomic numbers 4,8,10,15 and 19 with the following:
Element with four shells
Elements X, Y, Z have atomic numbers 6, 9 and 12 respectively. Which one:
- forms anion – negative ion;
- forms cation – positive ion;
- has 4 electrons in the outermost orbit. [Y, Z, X]
What is the relation between mass number & atomic number?
Compare the charge and mass of protons and electrons.
