How was francium discovered?

How was francium discovered?

Francium was finally discovered in 1939 by Marguerite Perey at the Curie Institute in Paris. She had purified a sample of actinium free of all its known radioactive impurities and yet its radioactivity still indicated another element was present, and which she rightly deduced was the missing element 87.

Why is francium the most reactive element in Group 1?

Explanation: Francium is an alkali metal in group 1/IA. All alkali metals have one valence electron. This makes it easier to remove the electron and makes the atom more reactive.

Is francium highly reactive?

Reactivity of Group 1 Elements The reactivity of alkali metals increases from the top to the bottom of the group, so lithium (Li) is the least reactive alkali metal and francium (Fr) is the most reactive.

How is an element more reactive?

An element’s reactivity is its tendency to lose or gain electrons. The Alkali Metals (Group 1) have the highest tendency to lose electrons, making them the most reactive of the metals.

Which one is more reactive out of fluorine and chlorine?

Fluorine is more reactive. Chlorine is less reactive than fluorine because the outer electrons in a chlorine atom are further from the nucleus than the outer electrons in a fluorine atom. It is harder for a chlorine atom to gain an electron than it is for a fluorine atom.

Why is fluorine very reactive?

Fluorine is more reactive. Fluorine wants to get to a stable 10 electrons to be like Neon. This is because the valence/bonding electrons are closer to the nucleus in Fluorine than they are Chlorine and others and thus more strongly attracted. Fluorine is most electronegative, thus it is most reactive.

Is fluorine more stable than chlorine?

Fluorine is having outermost Second orbital but Chlorine has outermost third orbital. hence , Fluorine is more stable than Chlorine. also , there is a rule that states , more negative charge on more electronegative atom is always a stable atom.