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Why is hydrogen placed at the top of the periodic table and not in group 1?
Wiki User
∙ 13y ago
Hydrogen is in fact in group 1 physically although not considered an alkali metal. It is at the top because the table is arranged by increasing atomic number; hydrogen is atomic number one, so it's first on the table.
Wiki User
∙ 13y ago
Wiki User
∙ 13y agoBecause hydrogen contains 17 more atomic properties than the noble gases, therefore, it relates closet to lithium than to the noble gases
Wiki User
∙ 13y agoThe elements are placed in order by number of protons. Hydrogen has 1 proton so it comes first.
Wiki User
∙ 12y agoBecause a hydrogen atom has one valence electron, as do the other elements in group 1A.
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What is the correct placement of hydrogen in the periodic table?
It is placed in group 1, period 1 on the modern periodic table
Why is hydrogen (H) placed with elements in Group 1A?
Properties of Hydrogen. Hydrogen is a nonmetal and is placed above group in the Periodic Table because it has ns1 electron configuration like the alkali metals.
What group is astatine in the periodic table?
Astatine is placed in group-17 in the Periodic Table. Its symbol is At.
What elements are found in group 1 and period 1?
Hydrogen is placed in group-1 and period-1 in the periodic table as hydrogen has only one electron.
Why hydrogen is placed in alkali metals or in first group of modern periodic table?
As with all alkali metals, hydrogen has one electron in its outermost shell.
In which group is hydrogen in periodic table?
it is placed in group 1
What group is hydrogen in in the periodic table?
Hydrogen is the first element in the periodic table of Mendeleev - atomic number 1. Hydrogen is placed in the group and period 1 of this table.
What is the correct placement of hydrogen in the periodic table?
It is placed in group 1, period 1 on the modern periodic table
Why was the element hydrogen placed in group 1 of the periodic table?
Hydrogen has one valence electron.
Why is hydrogen (H) placed with elements in Group 1A?
Properties of Hydrogen. Hydrogen is a nonmetal and is placed above group in the Periodic Table because it has ns1 electron configuration like the alkali metals.
In what period is hydrogen located at the periodic table?
Hydrogen is located in Group 1A of the Periodic Table.
What group is astatine in the periodic table?
Astatine is placed in group-17 in the Periodic Table. Its symbol is At.
What group and row is hydrogen in on the periodic table?
Hydrogen is found in group 1 row 1 of the periodic table
Is most likely to be a reason why the element hydrogen is placed in group I of the periodic table?
The valence of hydrogen is 1 and form the cation H+.
What elements are found in group 1 and period 1?
Hydrogen is placed in group-1 and period-1 in the periodic table as hydrogen has only one electron.
What is the evidence that suggests that hydrogen should be in the first column of the periodic table?
Hydrogen is a unique element of the Periodic Table. Due to its similarities in properties it can be placed at the top of group 1A or 4A or 7A.
What is the group is hydrogen in the periodic table?
group one
