In which of the following molecules, all atoms are coplanar ?
The Correct Option is A
Solution and Explanation
To determine which molecule has all atoms coplanar, we need to focus on the concept of hybridization. Molecules with sp² hybridized carbon atoms are typically coplanar, meaning all their atoms lie in the same plane.
Key Points:
- In sp² hybridization, carbon atoms form a trigonal planar structure, where all atoms are in the same plane.
- Examples of sp² hybridized molecules that are coplanar include:
- Ethene (C₂H₄): The two carbon atoms are sp² hybridized, and the molecule is flat.
- Benzene (C₆H₆): The six carbon atoms are sp² hybridized, and the molecule is planar.
- Formaldehyde (CH₂O): The carbon atom is sp² hybridized, and the atoms lie in the same plane.
If a molecule contains sp² hybridized carbon atoms, it will generally have all its atoms in the same plane (coplanar).
Top Questions on Hydrocarbons
Complete the following reactions by writing the structure of the main products:
- CBSE CLASS XII - 2025
- Chemistry
- Hydrocarbons
- The alkane from below having two secondary hydrogens is:
- JEE Main - 2025
- Chemistry
- Hydrocarbons
- Consider the following statements
Statement I: Benzene undergoes electrophilic substitution with excess chlorine in the presence of anhydrous AlCl$_3$
Statement - II: Benzene also undergoes electrophilic substitution with chlorine in the presence of UV light.
The correct answer is- TS EAMCET - 2025
- Chemistry
- Hydrocarbons
- An alcohol 'X' (C$_4$H$_{10}$O) reacts with conc. HCl at room temperature and gives chloride. 'X' on dehydration followed by ozonolysis gives 'Y' and 'Z'. Find 'Y' and 'Z'.
- TS EAMCET - 2025
- Chemistry
- Hydrocarbons
- The empirical formula of the compound 'D' formed in the given reaction sequence is
C₂H₄ \(\xrightarrow{Br_2|CCl_4}\) A \(\xrightarrow{(i) alc. KOH (ii) NaNH_2}\) B \(\xrightarrow{cyclic\;polymerization}\) C \(\xrightarrow{Cl_2(excess), dry\;AlCl_3, dark, cold}\) D- TS EAMCET - 2025
- Chemistry
- Hydrocarbons
Questions Asked in NEET exam
A sphere of radius R is cut from a larger solid sphere of radius 2R as shown in the figure. The ratio of the moment of inertia of the smaller sphere to that of the rest part of the sphere about the Y-axis is :
- NEET (UG) - 2025
- Moment Of Inertia
A constant voltage of 50 V is maintained between the points A and B of the circuit shown in the figure. The current through the branch CD of the circuit is :
- NEET (UG) - 2025
- Current electricity
The current passing through the battery in the given circuit, is:
- NEET (UG) - 2025
- Current electricity
- Two gases A and B are filled at the same pressure in separate cylinders with movable pistons of radii \(r_A\) and \(r_B\) respectively. On supplying an equal amount of heat to both the cylinders, their pressures remain constant and their pistons are displaced by 16 cm and 9 cm respectively. If the change in their internal energies is the same, then the ratio \(r_A / r_B\) is:
- NEET (UG) - 2025
- Thermodynamics
Given below are two statements:
Statement I: The primary source of energy in an ecosystem is solar energy.
Statement II: The rate of production of organic matter during photosynthesis in an ecosystem is called net primary productivity (NPP).
In light of the above statements, choose the most appropriate answer from the options given below:- NEET (UG) - 2025
- Ecosystems
Concepts Used:
Hydrocarbons
Hydrocarbons can be described as organic compounds that consists only hydrogen and carbon atoms. These compounds are of different types and thereby have distinct natures. Hydrocarbons are colorless gases and are known for discharging faint odours. These have been categorized under four major classes named as alkynes, alkanes, alkenes, and aromatic hydrocarbons.
Types of Hydrocarbons
- Saturated hydrocarbons - Saturated hydrocarbons are those compounds where there is a single bond exists between carbon atoms and are saturated with atoms of hydrogen.
- Unsaturated hydrocarbons - Hydrocarbons comprises of at least one double or triple bond between carbon atoms are known as unsaturated hydrocarbons.
- Aliphatic hydrocarbons - The term denotes the hydrocarbons formed as an outcome of the chemical degradation of fats. Aliphatic hydrocarbons are basically chemical compounds.
- Aromatic hydrocarbons - They are distinguished because of the presence of benzene rings in them. They give away distinct types of aroma. These hydrocarbons comprises of only hydrogen and carbon atoms.