ra和镭之间的差异

Thekey differencebetween radon and radium is thatradon is anoble gas, whereas radium is a radioactive element。

Although the names radon and radium sound similar, they are completely different chemical elements. They occur in different physical states. However, both these elements are radioactive elements due to their large atomic number.

CONTENTS

1.Overview and Key Difference
2.What is Radon
3.What is Radium
4.Side by Side Comparison – Radon vs Radium in Tabular Form
5.概括

What is Radon?

Radon is a noble gas having the chemical symbol Rn and atomic number 86. It is a radioactive element due to its large atomic number that makes it unstable. It is a colourless, odourless, and tasteless noble gas. Naturally, this element occurs in the intermediate steps of radioactive decay ofthorium and uranium。ra是镭的中间衰减产物。最常见和稳定的原子质量isotopera是222。但是，half-lifeof this stable isotope is about 3.8 days. Since its decay occurs quickly, radon is among the rarest chemical elements on Earth.

Radon is a p-block element in group 18 and period 6. It has a complete electronic structure according to the octet rule. It has minus values for melting point and boiling point, which makes it an essential gas at room temperature and pressure conditions. In addition, it has a face-centred cubic crystal structure. When considering its magnetic properties, it is non-magnetic because there are no unpaired electrons in radon atoms. Moreover, it is the densest noble gas, and it is an inert gas.

What is Radium?

镭是具有化学符号RA和原子数88的放射性化学元件。它被归类为碱土金属，因为它位于元素周期表的第2组中。它以纯净的状态为白色。暴露于空气后，它很容易与氮反应并形成黑色氮化赖以生成。镭最稳定的同位素是RA-226。该同位素的半衰期约为1600年。

镭在组2和7的周期性table. It is an s-block element. It has completely filled atomic orbitals, but it does not have all the electrons to obey the octet rule. At standard temperature and pressure, this element can exist in the solid-state. It has a body-centred cubic crystal structure. Since there are no unpaired electrons, it is non-magnetic. Radium is the only radioactive member in group 2 of the periodic table. In its pure state, this chemical element has a volatile nature. It has very high melting and boiling points.

What is the Difference Between Radon and Radium?

The key difference between radon and radium is that radon is a noble gas, whereas radium is a radioactive element. However, both these elements are radioactive because they have large atomic numbers. Furthermore, Radon is the intermediate decay product of radium. In addition, the half-life of radon is about 3.8 days, while the half-life of radium is about 1600 years.

The following table summarizes the difference between radon and radium.

概括– Radon vs Radium

Although the names radon and radium sound similar, they are completely different chemical elements. The key difference between radon and radium is that radon is a noble gas, whereas radium is a radioactive element. However, both these elements are radioactive because they have large atomic numbers.

Reference:

1. Hanusa, Timothy P. “Radium.” Encyclopædia Britannica, Encyclopædia Britannica, Inc., 14 Mar. 2019,Available here。
2. “Radium.” Wikipedia, Wikimedia Foundation, 24 Apr. 2020,Available here。
3. “Radon.” Wikipedia, Wikimedia Foundation, 20 May 2020,Available here。

Image Courtesy:

1. “86 radon (Rn) enhanced Bohr model” By Ahazard.sciencewriter – Own work(CC BY-SA 4.0)viaCommons Wikimedia
2. “Radium226” By grenadier – Own work(CC BY 3.0)viaCommons Wikimedia