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प्रश्न
An element A has 2 electrons in its fourth shell. State:
its valency
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उत्तर
Its valency is 2.
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संबंधित प्रश्न
What is meant by 'group' in the modern periodic table? How do the following change on moving from top to bottom in a group?
(i) Number of valence electrons
(ii) Number of occupied shells
(iii) Size of atoms
(iv) Metallic character of element
(v) Effective nuclear charge experienced by valence electrons
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Which of the following would weigh the least?
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