Where should hydrogen be placed in the periodic table?

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SUMMARY

The discussion centers on the placement of hydrogen in the periodic table, with participants debating whether it belongs in Group 1 or Group 7. While hydrogen is nominally classified as a Group 1 element, it is not typically considered an alkali metal due to its unique properties and behavior. The consensus highlights that hydrogen's reactivity and characteristics do not align with those of alkali metals, nor with the transition metals of Group 7, reinforcing its ambiguous position in the periodic table.

PREREQUISITES
  • Understanding of the periodic table structure and groups
  • Knowledge of alkali metals and their properties
  • Familiarity with transition metals and their characteristics
  • Basic principles of chemical reactivity and behavior
NEXT STEPS
  • Research the properties of alkali metals and their reactions with water
  • Study the characteristics of transition metals in Group 7
  • Explore the unique properties of hydrogen compared to other elements
  • Investigate the historical context of hydrogen's classification in chemistry
USEFUL FOR

Chemistry students, educators, and anyone interested in the classification of elements and the periodic table's structure.

ctimage
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Hi all,

I was always of the belief that hydrogen did not belong to any group in the periodic table. After discussions, some say that a group 1 or 7 place might be more suitable. Any opinions would be welcomed hopefully from a physics point-of-view on this topic.Thanks in advance
 
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Has anyone actually asked Hydrogen itself?
 
:smile:
 
What's wrong with where it's at?
 
ctimage said:
Hi all,

I was always of the belief that hydrogen did not belong to any group in the periodic table. After discussions, some say that a group 1 or 7 place might be more suitable. Any opinions would be welcomed hopefully from a physics point-of-view on this topic.

Thanks in advance

and what, specifically, do you base this belief on ?
and don't base it on personal belief rather base it on known science :smile:

from Wiki
the alkali metals comprise the group 1 elements,[note 4] excluding hydrogen (H), which is nominally a group 1 element[4][12] but not normally considered to be an alkali metal[13][14] as it rarely exhibits behaviour comparable to that of the alkali metals.[15] All the alkali metals react with water, with the heavier alkali metals reacting more vigorously than the lighter ones.

So its a sort of "hanger on" in Group one already

again from wiki...
All known elements of group 7 are transition metals

why would you want to put hydrogen in there ?Dave
 
Last edited:

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