Central atom.
Answer:-
A central atom in a molecule, cation or anion is that atom which has maximum number of unpaired electrons, either in its ground state or excited state.
angle of contact.
It is defined as the angle between the tangent to the liquid surface at the point of contact and solid surface inside the liquid is called as angle of contact The value of angle of contact depends upon (i) Nature of solid and liquid in contact (ii) Cleanliness of the surface in contact (iii) Medium above the free surface of liquid
Comments
Post a Comment