Answer: Option (b) is the correct answer.
Explanation:
In material bonding, there occurs Vander waal foces between the molecules in which their is either an induced or permanent dipole moment that attract molecules towards each other.
And, due to these forces the molecules are held together.
On the other hand, in a ionic bond there will always be transfer of electrons from one atom to another. This is because on atom which loses its valence electrons acquires a positive charge and another atom which gains the electrons acquires a negative charge.
Hence, these opposite charges strongly gets attracted towards each other forming a strong bond.
Whereas in a covalent bond, there will be sharing of electrons between the combining atoms.
In a metallic bond, there occurs a sea of electrons which is uniformly distributed throughout the solid substance or material.
Thus, we can conclude that the statement, Van der Waals bonds are formed by Van der Waals forces in which molecules or atoms have either an induced or permanent dipole moment to attract each other, about material bonding is correct.
Answer:
Electrons can be transferred from one atom to another.
Electrons can be shared between neighboring atoms
Electrons can be shared with all atoms in a material.
Explanation:
Firstly, they combine together to form various compounds.
Secondly, they want to gain stability.
hope this helps
Answer:Temperature is directly proportional with gas , liquid and solid in its decreasing form
Explanation:So when temperature rises the the solubility of a substance also increases with it where as when it decreases it also decreases with temperature
Answer:
water evaporate from surfaces
Explanation:
after it clumps to air to make clouds ,cools turn to liquid and rains or precipitate and becomes runoff
The correct answer is option 1. The first ionization energy, in group 15 elements in increasing atomic number, decreases. Ionization energy is the amount of energy requires to detach one electron from the atom. In the periodic table, the ionization energy decreases as one goes down.