An atom's reactivity is determined by the number of electrons in its outermost shell. Because the outer shell can hold up to eight electrons and not all elements are able to fill these shells to capacity, the fullness of the shells will determine the volatility of the atom's reactive properties as a result of the number of electrons required to complete the shell.Know More
Atoms with low reactivity have full atom shells. The noble gases, including neon, argon and krypton, fall into this category, as they are atoms that naturally present with full electron shells and are not looking to gain or lose electrons to achieve a balanced outer shell.
Atoms with high reactivity have outer shells that are imbalanced because of a low number of electrons (one or two) or a higher but not full number (six or seven). The most highly reactive elements are halogens, which are looking to gain one more electron, and alkali metals, which are looking to lose the single electron in their outer shells.Learn more about Chemistry
Iron(II), or Fe2+ ions and iron(III), or Fe3+ ions, primarily differ in their number of electrons, where iron(II) ions contain one more electron than iron(III) ions. The shorthand electron configurations of iron(II) and iron(III) are [Ar]3d6 and [Ar]3d5, respectively.Full Answer >
Each of the alkaline earth metals reacts with HCl, also known as hydrochloric acid, to form hydrogen gas and its corresponding metal chloride solution. The reaction becomes stronger the further down the group the element is on the periodic table.Full Answer >
The climate is determined by a number of factors, including how the atmosphere, oceans and continents react to the solar radiation that heats the planet. The oceans play a major role in determining long-term climate, as they transport and release stored heat slowly over hundreds of years.Full Answer >
The Food and Drug Administration has not determined a health risk from potassium benzoate within food and beverages as of 2014; however, the U.S. Environmental Protection Agency has established regulatory limits for potassium benzoate presence, according to the American Beverage Association. Potassium benzoate is a preservative.Full Answer >