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In the following question a statement of Assertion (A) followed by a statement of Reason (R) is given. Choose the correct option out of the choices given below each question.
Assertion (A): According to Mendeleev, periodic properties of elements is a function of their atomic number.
Reason (R): Atomic number is equal to the number of protons.
  • a)
    Both A and R are true and R is the correct explanation of A.
  • b)
    Both A and R are true but R is not the correct explanation of A.
  • c)
    A is true but R is false.
  • d)
    Both A and R are false.
Correct answer is option 'D'. Can you explain this answer?
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In the following question a statement of Assertion (A) followed by a ...
According to Mendeleev, periodic properties of elements is a function of their atomic masses.
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In the following question a statement of Assertion (A) followed by a ...
Assertion (A): According to Mendeleev, periodic properties of elements is a function of their atomic number.
Reason (R): Atomic number is equal to the number of protons.

Explanation:
Periodic properties of elements:
- Periodic properties of elements refer to the trends and patterns that can be observed when elements are arranged in the periodic table.
- These properties include atomic radius, ionization energy, electron affinity, electronegativity, and reactivity.
- The periodic table is a systematic arrangement of elements based on their atomic number and electron configuration.

Mendeleev's periodic table:
- Dmitri Mendeleev was a Russian chemist who is credited with the discovery and development of the periodic table.
- Mendeleev arranged the elements in his periodic table in order of increasing atomic mass.
- He noticed that when elements were arranged in this manner, certain periodic trends and patterns emerged.

Atomic number and periodic properties:
- The atomic number of an element is equal to the number of protons in the nucleus of its atom.
- It is a unique identifier for each element and determines its position in the periodic table.
- Mendeleev's assertion that periodic properties of elements are a function of their atomic number is correct.
- The atomic number determines the arrangement of elements in the periodic table and is directly related to their electron configuration.
- The electron configuration of an atom determines its chemical properties and behavior.
- As the atomic number increases, the number of protons and electrons also increases, leading to changes in the electron configuration and subsequently the periodic properties of the elements.

Conclusion:
- Both the assertion (A) and reason (R) are true.
- The reason (R) correctly explains the assertion (A).
- Therefore, the correct option is (D) - Both A and R are true, but R is not the correct explanation of A.
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In the following question a statement of Assertion (A) followed by a statement of Reason (R) is given. Choose the correct option out of the choices given below each question.Assertion (A): According to Mendeleev, periodic properties of elements is a function of their atomic number.Reason (R): Atomic number is equal to the number of protons.a)Both A and R are true and R is the correct explanation of A.b)Both A and R are true but R is not the correct explanation of A.c)A is true but R is false.d)Both A and R are false.Correct answer is option 'D'. Can you explain this answer?
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