This is a noble gas (group 18).
It does not exist
Most likely, this is Potassium's (K) atomic number.
It would be a metal . The metal family takes up most of the periodic table
The most reactive elements are alkali metals and halogens.
The metals have tendency to lose electrons. The elements of group-1,2 and 13 have tendency to form cations.
The more reactive it is the more less likely it is to be found in pure form
Most likely helium, an element on the Periodic Table of Elements.
It does not exist
Most likely, this is Potassium's (K) atomic number.
A single replacement reaction would most likely be the best method. By adding a metallic element of higher reactivity to the compound the Bismuth will separate from the Nitrate ion and the matallic element of higher reactivity will take its place. The Bismuth Nitrate would have to be in an aqueous solution however.
Near the top right. The Periodic Trend for boiling point is increasing from top right to bottom left. (Note: lower the boiling point, the more likely the element is gas at room temperature.) Elements such as Nitrogen, Oxygen, Helium, and Neon are all gases at room temperature.
Any element that is in group 15 of the periodic table will form three covalent bonds.
Total up the number of electrons. It appears to be 19, therefore, it likely corresponds to the 19th element on the periodic table, potassium.
It would be a metal . The metal family takes up most of the periodic table
Yes, iodine is an element. It is in the periodic table.
Elements in the middle of the periodic table are metals, and they are probably best categorized as transition elements.
The reactivity of halogens decreases down the group, which means Fluorine is the most reactive halogens as it is the most electronegative elements among the halogens, and also the Periodic Table.