Most reactive metals
Chlorine is in Group 17 (halogens) of the periodic table. It is located in the 3rd period, in the 7th vertical column from the left.
15 (the 15th column from the left) or also called 5A on some periodic tables.
The alkaline earth metals are located in Group 2 of the periodic table. This group includes elements like beryllium, magnesium, calcium, strontium, barium, and radium. They are found in the second column from the left on the periodic table.
Iron oxide is not on the periodic table because it is a compound and the periodic table is only for elements.The elements that make up iron oxide (iron and oxygen) can be found on it however.Iron is near the top and middle of the periodic table and has the symbol Fe.Oxygen is near the top-right corner and has the symbol O.
the atomic radius decreses from left to right in periodic table due to increase in the number of succesive element the electrons of the outermost shell are more attracted towards nucleus and the atomic radius or atomic size decreases.
The Alkali Metals are the first column of the periodic table, except for Hydrogen.
The far left column
A column in the periodic table is a vertical group of elements that share similar chemical properties due to having the same number of valence electrons. These columns are known as groups or families, and there are 18 groups in the periodic table.
The 1st column from the left
The 1st column from the left
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In group 1, the far left column of the Periodic Table, which is Lithium (Li), Sodium (Na), Potassium (K), Rudibium (Rb).
It is at the very top left column. Hydrogen is the first element.
==Yes== Hydrogen, a gas, is found on the left side of the periodic table. And it depends on which periodic table you look at. The standard 18 column ones have hydrogen on the left, but, a geologists' periodic table may have more (sorry, I'm not a geologist, I just know there is such a thing). But I think you mean the everyday periodic table... So yes, hydrogen.
Yes, alkali metals are located in the left-most column of the periodic table, specifically in Group 1. They are highly reactive elements with one electron in their outer shell.
The right-most column of the periodic table contains Heliu, Neon, Argon, Kryton, Xenon, Radon, and Ununoctium. All these elements are in the noble gas group. All of these elements are classified as non-metallic.
The 1st column is alkali metals, the 2nd column is alkaline earth metals.