Hydrogen is placed in the metal group because it only needs to lose one electron to be stable just like lithium, sodium, potassium etc
It also has the same number of valence electrons as the rest of the elements in group 1a. :)
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Hydrogen is not placed in the metal group; it is located at the top of Group 1 in the Periodic Table due to its electron configuration and properties. Although hydrogen can exhibit metallic properties under certain conditions, it is has unique characteristics that are neither fully metal-like nor non-metal-like.
Hydrogen is a nonmetal. It is placed in the upper left corner of the periodic table, making it part of the nonmetal group of elements.
Hydrogen is placed with the elements in group 1A (1) because it has one electron in its outermost shell, similar to other group 1A elements like lithium, sodium, and potassium. However, hydrogen is unique as it is not a metal like the other elements in this group, exhibiting properties of both metals and nonmetals.
Carbon (C)
Zinc, aluminum, and iron are examples of metal elements that produce hydrogen gas when they react with hydrochloric acid. This reaction occurs because the metal displaces hydrogen from the acid, forming metal chloride and hydrogen gas as products.
Hydrogen belongs to the alkali metal group and the nonmetal family.