How Well Do You Know Radium?
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.
- 1.
Radium belong to what group in the periodic table?
- A.
1
- B.
2
- C.
4
- D.
5
Correct Answer
B. 2Explanation
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.Rate this question:
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- 2.
Radium belongs to what class of metals?
- A.
Alkali earth metals
- B.
Alkali metals
- C.
Alkali and alkali earth metals
- D.
Metalloids
Correct Answer
A. Alkali earth metalsExplanation
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.Rate this question:
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- 3.
What is the color of pure radium?
- A.
Gold
- B.
Silvery white
- C.
Blue
- D.
Green
Correct Answer
B. Silvery whiteExplanation
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.Rate this question:
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- 4.
Radium belong to what period in the periodic table?
- A.
3
- B.
5
- C.
6
- D.
7
Correct Answer
D. 7Explanation
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.Rate this question:
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- 5.
Radium belongs to what block of elements in the periodic table?
- A.
S
- B.
P
- C.
D
- D.
F
Correct Answer
A. SExplanation
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.Rate this question:
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- 6.
What is the melting point of radium?
- A.
700° C
- B.
620° C
- C.
570° 570° 570° C
- D.
470° C
Correct Answer
A. 700° CExplanation
Radium has a melting point of 700°C.Rate this question:
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- 7.
The atomic number of radium is
- A.
288
- B.
88
- C.
226
- D.
26
Correct Answer
B. 88Explanation
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.Rate this question:
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- 8.
Radium has high affinity for which of these elements?
- A.
Chlorine
- B.
Carbon
- C.
Nitrogen
- D.
Oxygen
Correct Answer
D. OxygenExplanation
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.Rate this question:
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- 9.
What is the boiling point of radium?
- A.
770°C
- B.
570°C
- C.
800°C
- D.
1737°C
Correct Answer
D. 1737°C -
- 10.
Radium was discovered by
- A.
The Curies
- B.
The Priestlys
- C.
Frank Roberts
- D.
Andre Castaigne
Correct Answer
A. The CuriesExplanation
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.Rate this question:
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Mar 21, 2023Quiz Edited by
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Mar 09, 2018Quiz Created by
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