Assertion: Atomic number of the element ununtrium is 113. Reason: According to IUPAC system of nomenclature, the numerical roots for 1,1 and 3 are un, un and tri respectively.

Question

Assertion: Atomic number of the element ununtrium is 113. Reason: According to IUPAC system of nomenclature, the numerical roots for 1,1 and 3 are un, un and tri respectively. (A) If both assertion and reason are true and reason is the correct explanation of assertion. (B) If both assertion and reason are true but reason is not the correct explanation of assertion. (C) If assertion is true but reason is false. (D) If both assertion and reason are false.

Tardigrade Admin · Accepted Answer

The atomic number of the elements above atomic number 100 were given a systematic nomenclature by IUPAC which can be derived directly from the atomic number of the element using the numerical roots for o and numbers 1-9. The names were ended with '-ium' suffix. They have three-letter abbreviation using the first letter of each number. According to IUPAC systematic nomenclature, the numerical roots for 1,1 and 3 are un, un and tri, respectively. Thus, an element with atomic number 113 has its name as Ununtrium (Uut)

Q. Assertion : Atomic number of the element ununtrium is 113. Reason : According to IUPAC system of nomenclature, the numerical roots for 1,1 and 3 are un, un and tri respectively.

If both assertion and reason are true and reason is the correct explanation of assertion.

If both assertion and reason are true but reason is not the correct explanation of assertion.

If assertion is true but reason is false.

If both assertion and reason are false.

Q. Assertion : Atomic number of the element ununtrium is 113.
Reason : According to $I U P A C$ system of nomenclature, the numerical roots for $1, 1$ and $3$ are un, un and tri respectively.