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Grade: 6

                        

Hydrogen is a group seven element or group one element?....since it contains the properties of group one and seven

Hydrogen is a group seven element or group one element?....since it contains the properties of group one and seven

2 months ago

Answers : (2)

Bhargavi V Jaiswal
15 Points
							
 
hey there ! 
Position of an element in periodic table depends upon its electronic configuration and properties. Hydrogen resembles the elements of group I-A, IV-A and VII-A in some respects. Properties of hydrogen do not completely match any one of the above-mentioned groups. That is why position of hydrogen is still undecided, but because of the study purpose and maintaing regularity  It is placed seperately above group 1 elements and not WITH group 1 elements .. 
 
hope it helps
one month ago
Pawan Prajapati
askIITians Faculty
4730 Points
							Answer ::

Hydrogen is a nonmetal and is placed above group in the periodic table because it has ns1 electron configuration like the alkali metals. However, it varies greatly from the alkali metals as it forms cations (H+) more reluctantly than the other alkali metals.

*It resembles halogens in forming diatomic molecules. It does not behave like halogens, being mainly in the +1 oxidation state.
* It does not happen to be like halogens, (the most stable compounds of halogens have either -1 or a very high oxidation state like -7 or +5).


Thanks
one month ago
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