Chemistry

Chemical Bonding and Molecular Structure

1,277 Questions

This section tests your knowledge of chemical bonding, molecular structure, and hybridization. It covers ionic and covalent bonds, octet rule exceptions, and molecular geometry. These chemistry questions are common in various competitive entrance examinations.

Ionic and covalent bondsHybridisation of elementsOctet rule exceptionsMolecular geometryIntermolecular forces

Chemical Bonding and Molecular Structure Questions

Multiple choice

What group are the HALOGENS located?

  1. 5

  2. 7

  3. 17

  4. 18
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The halogens are located in Group 17 of the periodic table. This group contains reactive nonmetals like fluorine, chlorine, bromine, and iodine.

Multiple choice

The sp3d2 hybridization of central atom of a molecule would lead to

  1. Sqare planer geometry

  2. Tetrahedral geometry

  3. Trigonal bipyramidal geometry

  4. Octahedral geometry
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The sp3d2 hybridization involves six hybrid orbitals arranged in an octahedral geometry to minimize repulsion. This configuration is characteristic of molecules like SF6.

Multiple choice some important compounds of magnesium and calcium the s-block elements chemistry

Which among the following compound has the highest melting point?

  1. $\displaystyle C{ S } _{ 2 }$
  2. $\displaystyle HI$
  3. $\displaystyle { H } _{ 2 }S$
  4. $\displaystyle { H } _{ 2 }O$
  5. $\displaystyle MgO$
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

$MgO$ has highest melting point, because this is ionic in character and has very high lattice energy.
Hence, the answer is $MgO$.

Multiple choice

In Diamond all the carbon atoms form ___ bonds.

  1. 1

  2. 2

  3. 3

  4. 4
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

In the diamond crystal lattice, each carbon atom is covalently bonded to four other carbon atoms in a tetrahedral geometry. This strong, three-dimensional network structure is what gives diamond its extreme hardness.

Multiple choice

Carbon is bonded by...

  1. ionic bonds

  2. covalent bonds

  3. metalic bonds

  4. hyrogen bonds
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Carbon atoms typically form covalent bonds by sharing electrons with other atoms. This is the primary bonding mechanism in organic chemistry and carbon allotropes like diamond and graphite.

Multiple choice chemistry metals chemical properties and uses of metals and non-metals introduction to metals physical properties of non-metals

Which of the following non-metal is  useful as a rocket fuel?

  1. $Cl$
  2. $H _2$
  3. $S$
  4. $N _2$
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Hydrogen -- a light and extremely powerful rocket propellant -- has the lowest molecular weight of any known substance and burns with extreme intensity.  In combination with an oxidizer such as liquid oxygen, liquid hydrogen yields the highest specific impulse, or efficiency in relation to the amount of propellant consumed, of any known rocket propellant. 

Multiple choice chemistry metals reaction of metals reactions of metals chemical properties of metals

In which molecules s-p overlapping occurs?

  1. $CH _{4}$
  2. $NH _{3}$
  3. $H _{2}O$

  4. None of these
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

s-p overlapping one such type of overlapping. Here there is a overlapping between the s- and p- orbital's of the molecules. This type of overlapping is generally seen in the NH3 molecules. This formed by overlapping between 3 orbital's of hydrogen and 3 of nitrogen