CBSE X Chemistry Periodic Classification of Elements
How could we determine an element on the basis of given group and/or period ?
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21st February 2008
7:23 PM
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CBSE X Chemistry Periodic Classification of Elements
Elements of same group have similar properties. Why?
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29th November 2017
10:27 PM
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CBSE X Chemistry Periodic Classification of Elements
How does atomic size of the elements vary along a period?
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29th November 2017
10:29 PM
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JEE Plances JEE (Main) Chemistry p-Block Elements
Which of the following ligand is not responsible for symmetrical bond clevage in B2H6??
Me2S
H-
THF
NH3
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6th December 2017
12:02 PM
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CBSE X Chemistry Periodic Classification of Elements
question
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26th January 2018
8:59 PM
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ICSE X Chemistry Periodic Table - Periodic Properties and Variations of Properties
Give reason in the same period or subgroup a gradual change in a particular property may be seen.
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28th January 2018
9:44 AM
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CBSE XII Science Chemistry The p-Block Elements
How to compare between the two elements on the basis of acidic character
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31st January 2018
5:06 PM
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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?
Asked by Yesan
18th February 2018
4:53 PM
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CBSE XII Science Chemistry The p-Block Elements
Arrange the following in the decreasing order of their reducing character: HF, HCl, HBr, HI
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14th March 2018
12:22 PM
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ICSE X Chemistry Periodic Table - Periodic Properties and Variations of Properties
C part
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18th March 2018
3:18 PM
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CBSE X Chemistry Periodic Classification of Elements
why does acidic nature of hydrides increase along the group from top to bottom and along the period from left to right? what is oxyacid? what is protic and non protic solvent and how to identify them and state its characteristics? why is basicity of boric acid 1 ?
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23rd March 2018
11:05 AM
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ICSE X Chemistry Periodic Table - Periodic Properties and Variations of Properties
Q. 2
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14th April 2018
9:52 AM
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ICSE X Chemistry Periodic Table - Periodic Properties and Variations of Properties
Q. 2
Asked by Rayeesa
14th April 2018
9:53 AM
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NEET1 NEET1 Chemistry
How many elements would be in the IInd period of the Periodic Table if the spin quanturm numbers could have the value +1/2,0,−1/2? Solution For IInd period n=2 hence I m s 0 0 +12,0,−12 1 −1 +12,0,−12 0 +12,0,−12 +1 +12,0,−12 answer is 12. Please explain me the solution
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26th April 2018
11:11 AM
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NEET1 NEET1 Chemistry
where are poor and strong bases located in periodic table?
Asked by imtiyazmulla68
29th April 2018
9:07 AM
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CBSE X Chemistry Periodic Classification of Elements
What is the periodic trend in the variation of valency while going from left to right within a period? Explain it with reference to period 2 and period 3
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16th June 2018
10:14 AM
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CBSE XI Science Chemistry Classification of Elements and Periodicity in Properties
How to find strength of oxidising character of an element.
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30th June 2018
10:40 PM
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ICSE X Chemistry Periodic Table - Periodic Properties and Variations of Properties
In period 2 element A is to the right of element B. 1. The element A would probably have a (smaller/larger)atomic size than B.
Asked by Khaleel.mah43
23rd July 2018
2:26 PM
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JEE Plances JEE (Main) Chemistry Periodic Table and Periodicity
arrange the followig in increasing order of atomic radii Na,Si,Al,Ar and explain why
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1st August 2018
4:47 PM
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JEE Plances JEE (Main) Chemistry Periodic Table and Periodicity
kindly answer
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15th August 2018
10:57 PM
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CBSE XI Science Chemistry Classification of Elements and Periodicity in Properties
what are the exception in the periodic table
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12th December 2018
11:29 AM
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CBSE X Chemistry Periodic Classification of Elements
Sir, How to know abt periodic classification
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1st February 2019
7:51 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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CBSE X Chemistry Periodic Classification of Elements
Please write all the trends in groups and periods of periodic table with reasons (each reason should be atleast of 3 -4 lines)
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9th March 2019
10:50 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
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6th May 2019
8:08 PM
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CBSE X Chemistry Periodic Classification of Elements
How to learn periodic table
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28th May 2019
8:50 AM
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ICSE X Chemistry Periodic Table - Periodic Properties and Variations of Properties
name the element in correct order of their increasing atom atomic numbers present in the first second and third short period of the periodic table state each element electronic configuration
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31st May 2019
4:18 PM
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CBSE XI Science Chemistry Classification of Elements and Periodicity in Properties
Which is the element that has the highest first ionization potential?
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20th February 2020
8:47 PM
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ICSE X Chemistry Periodic Table - Periodic Properties and Variations of Properties
In the same period or subgroup a gradual change in a particular property may be seen.
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1st April 2020
9:35 AM
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CBSE X Chemistry Periodic Classification of Elements
state three main points of difference between Mendeleev periodic table and Modern Periodic Table
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21st April 2020
2:59 PM
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CBSE X Chemistry
Dear experts kindly help me out with this question with a proper solution. Thank you.
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22nd April 2020
8:55 PM
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ICSE X Chemistry Periodic Table - Periodic Properties and Variations of Properties
Which has larger atomic radius in period 2 of the periodic table, lithium or neon?
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22nd April 2020
10:40 PM
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ICSE X Chemistry Periodic Table - Periodic Properties and Variations of Properties
In the periodic table, Which element has the largest atomic radius? Which element has the smallest atomic radius?
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22nd April 2020
11:08 PM
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CBSE X Science
Distinguish between mendeleeve's periodic table and the modern periodic table
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15th October 2020
10:25 AM
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CBSE X Chemistry
i have doubt in chapter 5 of chemistry please explain me thr trends and limitation on modern periodic table
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30th December 2020
10:37 AM
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CBSE XI Science Chemistry The s-Block Elements
The basic character of Oxides and Hydroxides of Alkali and alkaline earth metal
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15th January 2021
11:54 PM
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ICSE IX Chemistry The Periodic Table
C is in Group 4. So, the hydride will be _____.
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16th March 2021
7:12 PM
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CBSE X Chemistry Periodic Classification of Elements
Que:-How it can be proved that the basic structure of the Modern Periodic Table is based on the electronic configuration of atoms of different elements?
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26th March 2021
7:43 AM
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ICSE X Chemistry Periodic Table - Periodic Properties and Variations of Properties
want to learn periodic table chapter
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15th September 2021
7:49 PM
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CBSE XI Science Chemistry Classification of Elements and Periodicity in Properties
find
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21st November 2023
10:53 AM
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ICSE X Chemistry Periodic Table - Periodic Properties and Variations of Properties
Arrange the following as per the instructions given in the brackets (a) Carbon, Fluorine, Beryllium (decreasing order of atomic size) (b) Sulphuric acid, Phosphoric acid, Acetic acid (increasing order of number of replaceable H atoms per molecule) (c) Potassium, Lithium, Sodium (increasing order of ionization potential)
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12th March 2024
9:48 AM
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