ICSE X Chemistry Periodic Table - Periodic Properties and Variations of Properties
The metals of group 2 from the top to bottom are: Be, Mg, Ca, Ba. Which of these metals will form ions most readily and why?
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18th February 2018
4:53 PM
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ICSE X Chemistry Periodic Table - Periodic Properties and Variations of Properties
Explain why are the following statements not correct : (1)All groups contain metals and non-metals. (2)Atoms of elements in the same group have the same number of electron(s). (3)Non-metallic character decreases across a period with increase in atomic number. (4)Reactivity increases with atomic number in a group as well as in a period.
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14th May 2018
10:37 PM
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ICSE VI Chemistry Elements, Compounds and Mixtures
What properties do we use while categorising elements as metals or non-metals?
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12th October 2018
2:12 PM
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CBSE X Chemistry Periodic Classification of Elements
Write the number of periods the modern periodic table has state the changes in metallic character and atomic size of elements as we move from left to right in a period .Also state the changes if any in the valency and atomic size of elements as we move down a group
Asked by ansarihalim414
14th December 2018
8:22 PM
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CBSE X Chemistry Periodic Classification of Elements
Explain giving justification the trends in the following properties of elements, on moving from left to right in a period, in the Modern periodic Table. (a) Variation of valency. (b) Change of atomic radius. (c) Metallic to non-metallic character. (d) Electronegative character. (e) Nature of oxides.
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28th February 2019
11:29 AM
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ICSE X Chemistry Periodic Table - Periodic Properties and Variations of Properties
GIVE REASON 1 The most metallic element is found at the bottom of a group. 2 1st element in a group is highly non metallic. PLEASE ANSWER IT
Asked by nishabr7
6th May 2019
8:08 PM
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ICSE X Chemistry Periodic Table - Periodic Properties and Variations of Properties
Arrange the following in the decreasing order of metallic character: Argon,Silicon,Aluminium,Sodium.
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18th December 2019
12:25 PM
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