How Well Do You Know Radium?

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1/10 Questions

Radium belong to what group in the periodic table?
- 1
- 2
- 4
- 5

About This Quiz

Radium is a radioactive element in the periodic table discorvered in 1898. It exhibits isotopy and belongs to a very reactive group of metals. Radium is chemically unstable.

2.

Radium belongs to what class of metals?
- Alkali earth metals
- Alkali metals
- Alkali and alkali earth metals
- Metalloids
Correct Answer

A. Alkali earth metals

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.

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3.

What is the color of pure radium?
- Gold
- Silvery white
- Blue
- Green
Correct Answer

A. Silvery white

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.

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4.

Radium belong to what period in the periodic table?
- 3
- 5
- 6
- 7
Correct Answer

A. 7

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.

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5.

Radium belongs to what block of elements in the periodic table?
- S
- P
- D
- F
Correct Answer

A. S

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.

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6.

What is the melting point of radium?
- 700° C
- 620° C
- 570° 570° 570° C
- 470° C
Correct Answer

A. 700° C

Explanation

Radium has a melting point of 700°C.

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7.

The atomic number of radium is
- 288
- 88
- 226
- 26
Correct Answer

A. 88

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.

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8.

Radium has high affinity for which of these elements?
- Chlorine
- Carbon
- Nitrogen
- Oxygen
Correct Answer

A. Oxygen

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.

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9.

What is the boiling point of radium?
- 770°C
- 570°C
- 800°C
- 1737°C
Correct Answer

A. 1737°C
10.

Radium was discovered by
- The Curies
- The Priestlys
- Frank Roberts
- Andre Castaigne
Correct Answer

A. The Curies

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.

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