Explanation

The IUPAC name of acetone is propanone or propan-2-one.

It is also known as 2-propanone. 

Explanation

Manganese (Mn) shows a maximum oxidation state of +7, as seen in compounds like KMnO₄ (potassium permanganate).

This is higher than the maximum oxidation states of Cr (+6), P (+5), and S (+6).

Explanation

Astatine is considered the rarest naturally occurring element on Earth, making it the "rare halogen" among the group which includes fluorine, chlorine, bromine, and iodine. 

Explanation

James Chadwick is known for his discovery of the neutron in 1932. 

Proton: Protons were discovered by Ernest Rutherford, before neutrons.

Electron: Electrons were discovered by J.J. Thomson, much earlier than protons or neutrons.

Positron: A positron is the antiparticle of an electron, and it was discovered by Carl Anderson in 1932. 

Explanation

• A substance is a piece of matter in pure form, with a specific composition and properties.
• It can be either an element or a compound.

Explanation

Aluminum (Al) is a metal that can easily lose electrons to form ions, making it a reducing agent.

As a reducing agent, aluminum can donate electrons to other substances, causing them to be reduced.

Explanation

When the reaction quotient (Qc) is equal to the equilibrium constant (Kc), the system is at equilibrium and is stable.

Qc = Kc indicates that the rates of forward and reverse reactions are equal, and the concentrations of reactants and products remain constant.

Explanation

The periodic table divided into S, P, d, and f block based on Electronic Configuration.

• S block: The s block includes the first two columns of the periodic table, which are the alkali and alkaline earth metals.
• P block: The p block includes the elements in the six columns on the right side of the periodic table.
• D block: The d block includes the elements in the ten columns in the middle of the periodic table. These are also known as the transition metals.
• F block: The f block includes the elements at the bottom of the periodic table, which are known as the inner transition metals or lanthanides and actinides.

Explanation

 Grignard reagent (RMgX) reacts with aldehydes (other than formaldehyde) to form secondary alcohols after acid hydrolysis.  

- With formaldehyde, it gives primary alcohol.  

- With ketones, it gives tertiary alcohol.

Explanation

 Lead tetroxide (Pb₃O₄), also known as red lead, crystallizes in the monoclinic crystal system.