Are the electrons in a coordinate covalent bond donated by both the bonded atoms?

On Mohs scale, isn't diamond assigned a $10$ on the basis of hardness? Halite is almost a purely ionic material.

Comparing their electronegativities will help determine the type of bond. is the tendency of a bonded atom to attract shared electrons to itself. The difference in electronegativity $(Delta"EN")$ is used...

The group that the are in are equal to the number of electrons in their respective outer shells.

The electronegativity of the atoms involved in a covalent bond determines which will have more pull on the electrons shared between them. Because all atoms have different electronegativities, the only...

Non polar covalent bond is the bond formed between two similar atoms in which the Electronegativity difference is zero eg - H---H While in polar covalent bond , there is...

Take ethylene $H_2C=CH_2$; around each carbon atom there are 4 . Two of these electrons combine with 2 hydrogen atoms (each with 1 electron) to form $2xxC-H$ bonds. Each carbon...

Both bonds result in forming of differentiating properties and structures. Atoms react in order to achieve stability. However, covalent bonds have a unique property that ionic bonds do not...

Where the $delta$ symbol denotes a little bit of (or partial) positive or negative charge. Dipoles are drawn from positive to negative. The overall dipole moment is the vector sum...

The modern covalent bond is conceived to be a region of high electron between two positively charged atomic nuclei such that nucleus-nucleus repulsion is negated, and a net attractive forces...

We know that $1*mol$ contains $6.022xx10^23$ individual sodium atoms, and has a mass of $22.99*g$. And thus for $1.$ there is a $2*g$ mass of $Na$. For $2.$ there is...