The variable valency is generally observed in case of
Correct answer: A. Transition elements
- A. Transition elements
- B. Inert gases
- C. Normal elements
- D. Non-metallic elements
Explanation
Transition elements are characterized by their ability to form multiple oxidation states due to the participation of their d-orbitals in bonding. This allows them to exhibit variable valency, unlike main group elements which typically have a single, predictable valency. Inert gases, or noble gases, have stable electronic configurations, leading to a lack of reactivity and a fixed valency of zero. Non-metallic elements, while sometimes having more than one valency, do not exhibit the same range of oxidation states as transition metals.
Last updated
About Periodic Properties and Trends
Periodic properties arise from electron configuration and effective nuclear charge, producing trends in atomic and ionic radius, ionization energy, electron affinity, electronegativity, metallic character and reactivity. Comparisons run across periods and down groups, with attention to common exceptions. The topic also relates these trends to the behavior of s-block and p-block elements.
Practise s-Block and p-Block Elements
1,359 free s-Block and p-Block Elements MCQs from Chemistry, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Exams that ask Chemistry questions like this
Chemistry is on 12 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
Related questions
2. Law of octaves was proposed by
7th period of the periodic table contains normal elements:
(A), (B) and (C) are elements in the third period. The oxide of(A) is ionic, that of (B) is amphoteric and that of (C) is a giant molecule (covalent network). (A), (B) and (C) have atomic numbers in the order:
(A), (B) and (C) are elements in the third short period. Oxide of (A) is ionic, that of (B) is amphoteric and of (C) a giant molecule. (A), (B) and (C) have atomic numbers in the order of:
A gas that reacts with CaO and not with NaHCO3 is: