This form of bonding is known as Covalent.
the key difference is certainty of locating electrons in the atom.
Explanation:
Bohr's model treats electron energy levels as clearly defined orbital paths around the nucleus ( like planets orbit the Sun).
The cloud model treats the energy levels as probability clouds, i.e. regions in which electrons are likely to be found. The shapes of the clouds are based on the shapes formed by electrons that are trapped like standing waves.
is more basic than 
in imidazole.
Imidazole have two nitrogen attached in the ring at 
.
This compound is an aromatic compound as it have 
π electrons which means lone pair electrons of nitrogen atom also takes part in π
system.
Thus when a proton attacks on this compound it easily attacks at rather than .
After the attack of 
ion at the conjugate base thus formed is also aromatic and hence is more stable.
If the proton had attacked at the conjugate base would not be aromatic and its stability will decrease.
The reaction is shown in the image attached
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<h3><u>Answer</u>;</h3>
A triple covalent bond because each atom requires three more electrons to complete its octet.
<h3><u>Explanation</u>;</h3>
- A triple covalent bond is a covalent bond formed by atoms that share three pairs of electrons.
- For example;<em><u> in a diatomic molecule such a nitrogen; A nitrogen atom has five valence electrons, which can be shown as one pair and three single electrons. </u></em>When combining with another nitrogen atom to form a diatomic molecule, the three single electrons on each atom combine to form three shared pairs of electrons.
