Explanation

sp hybridization: When one s orbital and one p orbital mix, they form two sp hybrid orbitals.

These hybrid orbitals are oriented linearly (180 degrees apart) from each other.

This linear geometry is characteristic of molecules with only two electron groups around a central atom.

Examples include acetylene (C2H2) and carbon monoxide (CO). 

Explanation

Hemoglobin is a large protein (macromolecule) made up of four polypeptide chains, each with a heme group.

It contains approximately 68,000 atoms, including carbon, hydrogen, oxygen, nitrogen, iron, and sulfur.

Explanation

Lithium aluminium hydride (LiAlH₄) is a strong reducing agent.

It reduces carboxylic acids to primary alcohols effectively.

Explanation

The Born-Haber cycle is a thermodynamic cycle used to calculate the lattice energy of ionic compounds.

It uses known values like ionization energy, electron affinity, and enthalpies to find the unknown lattice energy.

Explanation

In crystal field theory (CFT), the energy gap between the t2g and eg sets is denoted by 10Dq.

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Explanation

Water freezes and melts at 0°C (32°F) under standard atmospheric pressure.

At this temperature, water can exist in both solid (ice) and liquid forms depending on whether heat is being added or removed.