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MBD-PERIODIC CLASSIFICATION OF ELKHOENTS-EXAMPLE
- An atom has electronic configuration 2,8,7. To which of the following...
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- What physical and chemical properties of elements were used by mendele...
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- What are amphoteric oxides? give two examples of amphoteric oxides?
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- Why is it that non-metals do not displace hydrogen from dilute acids?
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- What are noble gas elements ? Why are they so called?
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- How is metallic character of an element defined? How does the melallic...
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- Why do the elements present in a group show similar chemical propertie...
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- How does the reactivity of the metals vary in a group?
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- Name the elements present in the second period. Give their electronic ...
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- Why do not the elements present in period show same valency?
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- The metallic character of the elements in a period decreases from left...
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- Give symbols for: a metal belonging to second group of the periodic ta...
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- Give symbols for:A metal belonging to the third group of the periodic ...
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- Give symbols for: two non-metals belonging to the halogen family.
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- Write electronic structures of:potassium
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- Write electronic structures of: lithium
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- Write electronic structures of: fluorine
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- Name two other elements which are in the same family as (i) carbon (II...
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- Carbon (atomic number 6) and silicon(atomic number 14) are elements in...
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- Sodium and aluminium have atomic numbers of 11 and 13 respectively the...
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