hydrogen bonding
metallic bonding
covalent bonding
ionic bonding
van der Waals' forces
Correct answer is A
No explanation has been provided for this answer.
Reducing agent
A bleaching agent
A dehydrating agent
A sulphonating agent
An oxidizing agent
Correct answer is A
No explanation has been provided for this answer.
Which of the following reactions is accompanied by the first ionization energy of an element X?
X +(aq) → X 2+ (aq) + e-
X - (g) → X(g) + e-
X+ (g) → X2+ +e-
X (g) → X+ (g) +e-
X(s) → X + (g) + e-
Correct answer is D
ionization energy (IE) is the minimum energy required to remove an isolated gaseous atom's most loosely bound electron. The first ionization energy is quantitatively expressed as
\(X_{(g)} + energy ⟶ X^+_{(g)} + e^−\)
where X is any atom or molecule, \(X^+\) is the resultant ion when an electron( \(e^−\)) was removed from the original atom.
The following compounds will decompose on heating except
NaHCO3
K2CO3
MgCO3
Ca(HCO3)2
ZnCO3
Correct answer is B
No explanation has been provided for this answer.
n a chemical reaction, the reacting species possess energy of motion known as
potential energy
free energy
bond energy
kinetic energy
hydration energy
Correct answer is D
No explanation has been provided for this answer.