Explanation

Symbol of mercury: Hg

Atomic number: 80

Boiling Point: 356.7 C

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

Explanation

• Methane (CH₄) is the simplest alkane.
• It contains one carbon atom bonded to four hydrogen atoms.
• Alkanes are saturated hydrocarbons containing only single covalent bonds.

Last verified on 09-11-2026

Explanation

• Electronegativity generally decreases down a group in the periodic table.
• Atomic size and electron shielding increase down a group.
• The nucleus attracts shared electrons less strongly.

Last verified on 09-11-2026