Class 11 Exam > Class 11 Questions > Which is not anomalous pair of elements in th...
Start Learning for Free
Which is not anomalous pair of elements in the Medeleeves periodic table -
- a)Ar and K
- b)Co and Ni
- c)Te and I
- d)Al and Si
Correct answer is option 'D'. Can you explain this answer?
Verified Answer
Which is not anomalous pair of elements in the Medeleeves periodic tab...
In Mendeleev’s periodic table, the elements are arranged in the increasing order of their atomic masses. In some places, this order has been ignored.
(a) Ar and K: The atomic mass of argon is 40 and that of potassium is 39, But argon is placed before potassium in the periodic table.
(b) Co and Ni: The positions of cobalt and nickel are not in proper order. Cobalt (at. wt. = 59.9) is placed before nickel (at. wt. = 58.6).
(c) Te and I: Tellurium (at. wt. = 127.6) is placed before iodine (at. wt = 126.9).
(d) Thorium (at, wt. =232.12) is placed before protactinium (at. Wt = 231).
So, Al and Si is not the anomalous pair
of elements in the Mendeleev's periodic table.
Most Upvoted Answer
Which is not anomalous pair of elements in the Medeleeves periodic tab...
**Explanation:**
In the Medeleeves periodic table, elements are arranged based on their electronic configurations and properties. To determine which pair of elements is not anomalous, we need to compare their positions in the periodic table and their properties.
**a) Ar and K:**
Ar (argon) and K (potassium) are both located in the same period (the fourth period) of the Medeleeves periodic table. Ar is a noble gas with an atomic number of 18, while K is an alkali metal with an atomic number of 19. These elements have different properties due to their different electron configurations. Therefore, this pair is not anomalous.
**b) Co and Ni:**
Co (cobalt) and Ni (nickel) are both located in the same group (group 9) of the Medeleeves periodic table. They have similar electronic configurations and properties. Both elements are transition metals with atomic numbers 27 and 28, respectively. This pair is not anomalous.
**c) Te and I:**
Te (tellurium) and I (iodine) are both located in the same period (the fifth period) of the Medeleeves periodic table. They have different atomic numbers and electronic configurations. Te is a metalloid with an atomic number of 52, while I is a halogen with an atomic number of 53. This pair is not anomalous.
**d) Al and Si:**
Al (aluminum) and Si (silicon) are located in different groups of the Medeleeves periodic table. Al is an element in group 13, while Si is an element in group 14. These elements have different properties due to their different electron configurations. Al is a metal, while Si is a metalloid. This pair is anomalous.
Therefore, the correct answer is option 'D' - Al and Si.
In the Medeleeves periodic table, elements are arranged based on their electronic configurations and properties. To determine which pair of elements is not anomalous, we need to compare their positions in the periodic table and their properties.
**a) Ar and K:**
Ar (argon) and K (potassium) are both located in the same period (the fourth period) of the Medeleeves periodic table. Ar is a noble gas with an atomic number of 18, while K is an alkali metal with an atomic number of 19. These elements have different properties due to their different electron configurations. Therefore, this pair is not anomalous.
**b) Co and Ni:**
Co (cobalt) and Ni (nickel) are both located in the same group (group 9) of the Medeleeves periodic table. They have similar electronic configurations and properties. Both elements are transition metals with atomic numbers 27 and 28, respectively. This pair is not anomalous.
**c) Te and I:**
Te (tellurium) and I (iodine) are both located in the same period (the fifth period) of the Medeleeves periodic table. They have different atomic numbers and electronic configurations. Te is a metalloid with an atomic number of 52, while I is a halogen with an atomic number of 53. This pair is not anomalous.
**d) Al and Si:**
Al (aluminum) and Si (silicon) are located in different groups of the Medeleeves periodic table. Al is an element in group 13, while Si is an element in group 14. These elements have different properties due to their different electron configurations. Al is a metal, while Si is a metalloid. This pair is anomalous.
Therefore, the correct answer is option 'D' - Al and Si.
|
Explore Courses for Class 11 exam
|
|
Top Courses for Class 11View all
Question Description
Which is not anomalous pair of elements in the Medeleeves periodic table -a)Ar and Kb)Co and Nic)Te and Id)Al and SiCorrect answer is option 'D'. Can you explain this answer? for Class 11 2025 is part of Class 11 preparation. The Question and answers have been prepared according to the Class 11 exam syllabus. Information about Which is not anomalous pair of elements in the Medeleeves periodic table -a)Ar and Kb)Co and Nic)Te and Id)Al and SiCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for Class 11 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which is not anomalous pair of elements in the Medeleeves periodic table -a)Ar and Kb)Co and Nic)Te and Id)Al and SiCorrect answer is option 'D'. Can you explain this answer?.
Which is not anomalous pair of elements in the Medeleeves periodic table -a)Ar and Kb)Co and Nic)Te and Id)Al and SiCorrect answer is option 'D'. Can you explain this answer? for Class 11 2025 is part of Class 11 preparation. The Question and answers have been prepared according to the Class 11 exam syllabus. Information about Which is not anomalous pair of elements in the Medeleeves periodic table -a)Ar and Kb)Co and Nic)Te and Id)Al and SiCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for Class 11 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which is not anomalous pair of elements in the Medeleeves periodic table -a)Ar and Kb)Co and Nic)Te and Id)Al and SiCorrect answer is option 'D'. Can you explain this answer?.
Solutions for Which is not anomalous pair of elements in the Medeleeves periodic table -a)Ar and Kb)Co and Nic)Te and Id)Al and SiCorrect answer is option 'D'. Can you explain this answer? in English & in Hindi are available as part of our courses for Class 11.
Download more important topics, notes, lectures and mock test series for Class 11 Exam by signing up for free.
Here you can find the meaning of Which is not anomalous pair of elements in the Medeleeves periodic table -a)Ar and Kb)Co and Nic)Te and Id)Al and SiCorrect answer is option 'D'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of
Which is not anomalous pair of elements in the Medeleeves periodic table -a)Ar and Kb)Co and Nic)Te and Id)Al and SiCorrect answer is option 'D'. Can you explain this answer?, a detailed solution for Which is not anomalous pair of elements in the Medeleeves periodic table -a)Ar and Kb)Co and Nic)Te and Id)Al and SiCorrect answer is option 'D'. Can you explain this answer? has been provided alongside types of Which is not anomalous pair of elements in the Medeleeves periodic table -a)Ar and Kb)Co and Nic)Te and Id)Al and SiCorrect answer is option 'D'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice Which is not anomalous pair of elements in the Medeleeves periodic table -a)Ar and Kb)Co and Nic)Te and Id)Al and SiCorrect answer is option 'D'. Can you explain this answer? tests, examples and also practice Class 11 tests.
|
|
Explore Courses for Class 11 exam
|
|
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
|
© EduRev
|
Education Revolution
|
|
Signup to see your scores
go up within 7 days!
Access 1000+ FREE Docs, Videos and Tests
Takes less than 10 seconds to signup