Explanation

• A neutron has no electric charge, so it is electrically neutral.

Additional information:

• A proton has a positive charge (+1).
• An electron has a negative charge (−1).

Last verified on 07-10-2026

Explanation

• Zinc (Zn) is located in Group 12 and Period 4 of the periodic table.
• Its atomic number is 30.
• It is commonly classified as a transition metal in standard educational curricula because it belongs to the d-block.
• Zinc is used in galvanization to protect iron and steel from rusting.

Last verified on 09-11-2026

Explanation

• Calcium (Ca) is an alkaline earth metal belonging to Group 2 of the periodic table.
• Its atomic number is 20.
• Mercury (Hg) is a liquid metal at room temperature.
• Its atomic number is 80.
• Mercury has a boiling point of approximately 356.7°C.

Last verified on 09-11-2026

Explanation

• Benzene is an aromatic hydrocarbon with the molecular formula C₆H₆.
• It contains six carbon atoms and six hydrogen atoms.
• Its carbon atoms form a six-membered ring with delocalized electrons.

Last verified on 09-11-2026

Explanation

• Isomers have the same molecular formula but different arrangements of atoms.
• They may have different structural formulas and physical properties.
• Structural isomers differ in the connectivity of their atoms.
• For example, n-butane and isobutane (C₄H₁₀) have the same molecular formula but different structures.

Last verified on 02-11-2026