It occurs at the top of the metals (alkaline metals) - the first group of elements but
while normally shown at the top of the Group 1 elements in the Periodic Table, the term "alkaline metal" refers only to Group 1 elements from lithium onwards. (Lithium is the next one down)
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.
The top 10 elements that make up Earth's atmosphere are: nitrogen (78%), oxygen (21%), argon (0.93%), carbon dioxide (0.04%), neon, helium, methane, krypton, hydrogen, and xenon. These elements, along with trace gases and water vapor, help create the composition of the atmosphere that sustains life on Earth.
The top 10 elements in Earth's atmosphere, by volume, are nitrogen, oxygen, argon, carbon dioxide, neon, helium, methane, krypton, hydrogen, and xenon. Nitrogen and oxygen together make up around 99% of the atmosphere.
Hydrogen is in the periodic table because it is an element, and all elements are in the periodic table.
The top three elements in Earth's atmosphere are nitrogen (78%), oxygen (21%), and argon (0.93%). These three elements together make up the vast majority of the gases present in the atmosphere, with nitrogen being the most abundant.
It is placed at the top because it has one proton in its nucleus. Hence giving it an atomic number of one
It is at the very top left column. Hydrogen is the first element.
Columns are periods, and is different to group. On the Periodic Table; Column = Group Row = Period Group 1 (Top to bottom) = Hydrogen, Lithium, Sodium, Potassium, Rubidium, Cesium, Francium Period 1 (Left to Right) = Hydrogen, Helium
The statue was placed on top of an alabaster column
Hydrogen should be in the first column of the periodic table because it has one electron in its outer shell, like the other elements in Group 1 (alkali metals). It also displays similar chemical properties to the alkali metals, such as the tendency to lose an electron to form a positive ion. Additionally, hydrogen behaves like a nonmetal in many instances, which supports its placement at the beginning of the periodic table.
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.
It is placed in group 1, period 1 on the modern periodic table
Hydrogen was placed in the first group because has a high tendency to loss an electron.
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.
B. Elements on the top right, excluding column 18.
The most common elements in the Universe are hydrogen and helium. For additional elements, check the Wikipedia article on "Abundance of the chemical elements".
Hydrogen is not exactly written alone on the periodic table. The table is organized into rows and columns, both of which represent groupings of elements for different reasons. For example, elements in the same column (called "groups") all have the same number of free electrons, or "valence electrons". Elements in the same row have the same or similar numbers of filled electron shells. Hydrogen is in the top row because it has only 1 electron shell and it is in the far left column because it has 1 free electron (just like all of the elements beneath it). Helium, on the other hand, also has 1 electron shell, but is in the far right column because it has a full electron shell (no free electrons). This makes it chemically similar to all of the elements beneath it (this group is called the "noble gases" because they have no free electrons to interact with other elements).