How Well Do You Know Radium?

Explanation
Radium belongs to Group 2 in the periodic table. Group 2 elements are known as alkaline earth metals and include beryllium, magnesium, calcium, strontium, barium, and radium. These elements have two valence electrons and are highly reactive. Radium is a radioactive element that was discovered by Marie and Pierre Curie in 1898. It is a rare metal and has limited uses due to its high radioactivity.

Explanation
Radium belongs to the class of metals known as alkali earth metals. Alkali earth metals are located in Group 2 of the periodic table and include elements such as beryllium, magnesium, calcium, strontium, and barium. These metals have two valence electrons and are relatively reactive, although not as reactive as alkali metals. Radium, with its atomic number 88, is a highly radioactive element that is found in trace amounts in uranium ores. It is known for its luminescent properties and was used in various applications, such as self-luminous paint and cancer treatments.

Explanation
Radium is a highly radioactive element that is silvery white in color. It is a metallic element that belongs to the alkaline earth metals group. Radium's silvery white color is a characteristic property of the element, and it is often used in luminescent paints and in medical treatments for cancer.

Explanation
Radium belongs to period 7 in the periodic table. The periodic table is organized into periods, which represent the number of electron shells an element's atoms have. Radium, with its atomic number of 88, falls into period 7 because its atoms have seven electron shells.

Explanation
Radium belongs to the s block of elements in the periodic table. The periodic table is divided into blocks based on the electron configuration of the elements. The s block consists of the first two groups, which include elements with their outermost electron in the s orbital. Radium is a member of Group 2, also known as the alkaline earth metals, and its outermost electron is in the s orbital, hence it belongs to the s block.

Explanation
Radium has a melting point of 700°C.

Explanation
Radium is a chemical element with the symbol Ra and atomic number 88. The atomic number represents the number of protons in the nucleus of an atom. Therefore, the correct answer is 88.

Explanation
Radium has a high affinity for oxygen because radium is a highly reactive element and readily forms compounds with oxygen. This is due to the fact that radium is an alkaline earth metal and oxygen is a highly electronegative element. The high affinity for oxygen allows radium to form stable compounds, such as radium oxide (RaO), which is commonly found in nature.

Explanation
The correct answer is The Curies. The Curies, Marie and Pierre Curie, were a married couple who made significant contributions to the field of radioactivity. They discovered the element radium in 1898, along with polonium. Their discovery of radium paved the way for further research on radioactivity and its applications in medicine and industry.