This element is francium.
Far more than half of the number of the 'periodic table elements' are metals.
Element X would most likely be found in the alkali metal group on the far left of the periodic table.
Look at how far away the element is from thenoblegasses
On the far left on the periodic table.
As far as i know, its the atomic mass of oxygen
Far more than half of the number of the 'periodic table elements' are metals.
Element X would most likely be found in the alkali metal group on the far left of the periodic table.
Elements on the far left side of the periodic table will have the property of being highly reactive and easily losing electrons to form positive ions.
Look at how far away the element is from thenoblegasses
There are far to many elements following the 6th on in the Periodic Table. Included below is a link to a very nice Periodic table.
Most negative ions are found in elements on the far right side of the periodic table. But, if you have a decent table, you can find the possible ionic charges for each element. Look for the negative numbers.
There is not 400th element. So far we only have up to element 118: ununoctium
As far as we know, there are much less than a million. All of the known elements in the world are listed on the Periodic Table of Elements.
On the far left on the periodic table.
As far as i know, its the atomic mass of oxygen
It is a noble gas, which are in group 18 (far right column of the periodic table). It is in period (row) 4. It is element 36. Its abbreviation is Kr.
It depends on the placing of the element in the periodic table. For the far left, group 1, the most reactive element is the one closest to the bottom. For the far right, the most reactive is the one closest to the top. The table follows certain trends, depending on it's placement in the periodic table. By learning these trends, you'll be able to tell at a glance. For example, Francium, the bottom-left most element only ever exists for a fraction of a second; it's so reactive, it reacts when it is created.