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NEET UG CHEMISTRY MCQ: CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES
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Remembering
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Which of the following pairs of elements is/are correctly matched?
a) Eka Silicon-
b) Eka Aluminium-
c) Eka- Mangnese-
a) Eka Silicon-
b) Eka Aluminium-
c) Eka- Mangnese-
View answer and explanation
Correct option: B
a, b
Option B is correct. Eka-silicon corresponds to Germanium (Ge) and Eka-aluminium corresponds to Gallium (Ga). Eka-Manganese corresponds to Technetium (Tc), not Tellurium (Te).
More Questions from CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES
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The elements with zero electron affinity are
S-I: paramagnetic.
S-II: All the orbitals present in ion are doubly occupied. Which of the following is the most electropositive element? The law of Octaves is not applicable to: Assertion (A): Mendeleev's arranged elements in horizontal rows and vertical columns.
Reason (R): Mendeleev's ignored the order of atomic weight thinking that the atomic measurements might be incorrect. Which of the following electronic configuration does not belong to same block as others?
S-II: All the orbitals present in ion are doubly occupied. Which of the following is the most electropositive element? The law of Octaves is not applicable to: Assertion (A): Mendeleev's arranged elements in horizontal rows and vertical columns.
Reason (R): Mendeleev's ignored the order of atomic weight thinking that the atomic measurements might be incorrect. Which of the following electronic configuration does not belong to same block as others?