Tones and tints are key concepts in colour theory. A tint is created by adding white to a colour, making it lighter, while a tone is created by adding grey to a colour, reducing its saturation. These methods help artists manipulate colour to create depth, highlights, and shadows in their work.
Europium (Eu) resembles Calcium (Ca) in the following ways:
(A). Both are diamagnetic
(B). Insolubility of their sulphates and carbonates in water
(C). Solubility of these metals in liquid NH3
(D). Insolubility of their dichlorides in strong HCI
Choose the correct answer from the options given below: