Rubidium is the first element placed in period 5. It is an alkali metal, the most reactive group in the periodic table, having properties and similarities with both other alkali metals and other period 5 elements. Rubidium is the first element so, that concludes that it is the most active metal in period 5..
Then, what is the most active metal on the periodic table?
Reactivity and the Metal Activity Series The most reactive metal on the periodic table is francium. Francium, however, is a laboratory-produced element and only minute quantities have been made, so for all practical purposes, the most reactive metal is cesium.
Likewise, which element is the most active nonmetal? The most active nonmetals belong to the halogen family, which sits to the left of the noble gases on the right side of the periodic table. The halogens are so reactive that they are never found in nature by themselves. The elements fluorine, chlorine, bromine, iodine and astatine make up the halogen family.
Simply so, what is the radioactive element in Period 5?
technetium
Which element in Period 5 of the periodic table is a transition element?
The period 5 transition metals are yttrium (Y), zirconium (Zr), niobium (Nb), molybdenum (Mo), technetium (Tc), ruthenium (Ru), rhodium (Rh), palladium (Pd), silver (Ag), and cadmium (Cd).
Related Question Answers
Which is the most active metal and why?
The primary difference between metals is the ease with which they undergo chemical reactions. The elements toward the bottom left corner of the periodic table are the metals that are the most active in the sense of being the most reactive. Lithium, sodium, and potassium all react with water, for example.Which group has the most active metals?
Most of the active metals are so reactive that they readily combine with O 2 O_2 O2 and H 2 O H_2O H2O. These metals are found in the group I A and II A of the periodic table. As all the given options belong to the same group and the activity increases down the group. So Rubidium is the most active metal.Which element is most reactive?
Fluorine is identified as the most electronegative element in the periodic table, making it the strongest oxidizing agent. It is the most reactive non-metal. Fluorine is so reactive that it can burn substances that one would generally think of as non-flammable!What makes a metal more reactive?
The number of electrons in the outermost shell of an atom determines its reactivity. Noble gases have low reactivity because they have full electron shells. Alkali metals are highly reactive because they readily lose the single electron in their outermost shell.Who discovered halogens?
Scheele called the element "dephlogisticated muriatic acid", which is how chlorine was known for 33 years. In 1807, Humphry Davy investigated chlorine and discovered that it is an actual element.Which carbon compound is most reactive?
- Methane is the most reactive compound It is also active because it is in unsaturated hydrocarbon form and can take part in addition to reactions and also it is colourless gas, odourless gas.Which elements are non reactive?
Elements in the periodic table whose outermost shells are filled with electrons (8). Helium, neon, and argon are examples of noble gas elements. They are very non-reactive.What is the most dangerous element?
Plutonium: A History of the World's Most Dangerous Element.What is the most dangerous atom?
Plutonium
How many elements are there in 7th period?
four
Is there a main group element in Period 5?
Rubidium is the first element placed in period 5. It is an alkali metal, the most reactive group in the periodic table, having properties and similarities with both other alkali metals and other period 5 elements.Do all elements have half lives?
Technically, yes, all elements have a half-life. All elements have isotopes that are radioactive and therefore have half-lives. Even "stable" isotopes decay eventually. But some decay so slowly that it is difficult to measure their decay rates.Is natural uranium dangerous?
Because uranium is a radioactive substance health effects have been researched. Scientists have detected no harmful radiation effects of natural levels of uranium. However, chemical effects may occur after the uptake of large amounts of uranium and these can cause health effects such as kidney disease.How can you tell if an element is radioactive?
The two you asked about, iodine, atomic number 53, and barium, atomic number 56, both fall under the cutoff line for natural radioactivity. One way you can tell if an element is radioactive or not is with the use of a Geiger Counter, which measures the nuber of nuclei being degraded per minute.Which element is in period 5 Group 2?
"Beryllium." Periodic Table of Elements and Chemistry.How many elements are there?
118 elements
What is the heaviest element?
uranium
How do you know which element is least reactive?
Explanation: The reactivity of an element can be determined by looking at the electron configuration of the element. The least reactive elements are those who have a full outermost valence shell ie they have 8 electrons in the outer shell so elements such as helium, neon, radon or the transition elements.What element is a metalloid?
The metalloids; boron (B), silicon (Si), germanium (Ge), arsenic (As), antimony (Sb), tellurium (Te), polonium (Po) and astatine (At) are the elements found along the step like line between metals and non-metals of the periodic table. Metalloids have properties of both metals and non-metals. 
