PPSCFPSCNTSPakistan govt jobs
- Subject
- S-BLOCK ELEMENTSchemistry-mcqs › s-block-elements
- Published
- 18 Mar 2019
- Last updated
- 28 May 2026
Explanation
Sodium does not commonly form a +2 oxidation state because removing a second electron requires a very large amount of energy, known as the high second ionization energy. This makes the +2 state energetically unfavorable compared to the +1 state.
More S-BLOCK ELEMENTS MCQs
Practice related questions from the same subject.
- 1.What is the effect of adding 2% gypsum to cement?
- 2.Which element is capable of forming complex compounds?
- 3.Why is the second ionization energy of alkali metals significantly high?
- 4.In which of the following gases does magnesium metal fail to ignite when placed inside a container?
- 5.Which pair of elements exhibits a diagonal relationship in the periodic table?
- 6.Which alkali metal produces exclusively the normal oxide upon reacting with oxygen?
- 7.Gypsum is added to the soil primarily to supply which nutrients?
- 8.During electrolysis in a diaphragm cell, which substance undergoes reduction to release hydrogen gas?
More in Chemistry Mcqs
- Alcohols Phenols and Ethers
- Aldehydes and Ketones
- Aliphatic Hydrocarbons
- Alkyl Halides
- Aromatic Hydrocarbons
- Atomic Structure
- Carboxylic Acids
- Chemical Bonding
- Chemical Equilibrium
- Chemistry Basic Concept
- Common Chemical Industries
- Diagnostic Test
- Electrochemistry
- Environmental Chemistry
- Experimental Techniques
- Gases
- Group III A and IVA Elements
- Group VA and VIA Elements
- Liquids and Solids
- Macromolecules
- Organic Chemistry
- Periodic Classification
- Reaction Kinetics
- Solutions
- The Halogens and The Noble Gases
- Thermochemistry
- Transition Elements