Given below are two statements: one is labelled as Assertion (A) and the other is…
Chemistry · NEET · NTA Exams — Classification of Elements and Periodicity in Properties
Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R).
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.
In the light of the above statements, choose the most appropriate answer from the options given below:
- (A) is correct but (R) is not correct
- (A) is not correct but (R) is correct
- Both (A) and (R) are correct and (R) is the correct explanation of (A)
- Both (A) and (R) are correct but (R) is not the correct explanation of (A)
Answer
(B) (A) is not correct but (R) is correct
Sign up free on Edukali to view the step-by-step worked solution and practice thousands of similar questions.
Related practice questions
- The electronic configuration of an element is 1s 2 2s 2 2p 6 3s 2 3p 6 3d 10 4s 1 . What is the atomic number…
- Among Al 2 O 3 , SiO 2 , P 2 O 3 and SO 2 the correct order of acid strength is:
- IP 1 and IP 2 of Mg are 178 and 384 kcal. The enthalpy required for the reaction Mg → Mg 2 + + 2e - :
- The size of the iso-electronic species Cl - , Ar and Ca 2+ is affected by
- The IE 1 , IE 2 , IE 3 , IE 4 , and IE 5 of an element are 7.1, 14.3, 34.5, 46.8 and 162.2 eV respectively…
- The Ionic radii of N 3 - ,O 2 - and F - are respectively given:
- Given below are two statements: Statement I : According to Mendeleev periodic law, the properties of the…
- In general, the properties that decrease and increase down a group in the periodic table, respectively, are:
More Classification of Elements and Periodicity in Properties questions · Browse all practice questions