Which element of the periodic table is the least reactive?

Which element of the periodic table is the least reactive?

Noble gases
Noble gases are nonreactive, nonmetallic elements in group 18 of the periodic table. Noble gases are the least reactive of all elements. That’s because they have eight valence electrons, which fill their outer energy level.

Which is the most reactive potassium calcium or copper?

Rusting is an oxidation reaction Sep 30, 2012 · Best Answer: Most reactive: potassium, sodium, calcium, magnesium, zinc, iron, copper :Least reactive Potassium reacts violently with water, sodium reacts less violently; potassium is lower down group 1 of the periodic table than sodium.

Which element is less reactive than potassium?

sodium
As we go down the group the size of metal increases and ionization enthalpy decreases. This is the reason sodium is less reactive than potassium.

Is calcium less reactive than copper?

(b) Calcium reacts with hydrochloric acid but copper doesn’t because calcium is more reactive than copper.

Where is the least reactive element located?

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.

Which metal is more reactive calcium or potassium?

Reactivity of an element depends on upon the ionisation enthalpy. Smaller the ionisation enthalpy, greater is the reactivity. As potassium has smaller ionisation enthalpy than calcium. Thus, potassium is more reactive than calcium.

Which metal is more reactive copper or potassium?

Reactivity of element decreases on moving from top to bottom in the given reactivity series. In the reactivity series, copper, gold, and silver are at the bottom and hence are least reactive. Potassium is at the top of the series and hence is most reactive.

Why is potassium more reactive?

Therefore, potassium has an additional shell of electrons and thus 8 more electrons. This extra shell of electrons shields the attractive force exerted on the outer electron by the nucleus. As a result, less energy is required to remove the outer electron of potassium and so it is more reactive.

Which metal is more reactive sodium or potassium?

As potassium is larger than sodium, potassium’s valence electron is at a greater distance from the attractive nucleus and is so removed more easily than sodium’s valence electron. As it is removed more easily, it requires less energy, and can be said to be more reactive.

What is the reactivity of elements on the periodic table?

Reactivity: The reactivity of the elements increases going from left to right on the periodic table. Each element going from left to right tends to be more reactive. But, at the far right are the noble gasses, and they are almost completely inert.

What is the most reactive element?

The most reactive elements are the alkali metals. They react with the halogens that are also very reactive. The least reactive elements are the noble gases. The most reactive are the halogens and the alkali metals.

How do you find elements in the periodic table?

Part 2 of 3: Studying the Elements Recognize the element’s 1 to 2-letter symbol. It most often appears in the center of the box in a large font. Look for the full name of the element, if it’s present. This is the name of the element that you will use when writing it out. Find the atomic number. Recognize the atomic number is the number of protons in an atom.

What are the names of the elements on the periodic table?

They are: hydrogen (H), oxygen (O), nitrogen (N) and carbon (C). The Periodic Table of Elements is arranged in rows called periods. Columns in the chart are grouped together by similar properties like gases, metals and earth. The number in each box is the number of atoms and the letters are the abbreviation for the symbol.