Single Choice

Number of $$\sigma$$ and $$\pi$$ bonds in $$C_{2}$$ molecule is/are:

A$$1\sigma$$ and $$1\pi$$
B$$1\sigma$$ and $$2\pi$$
C$$2\pi$$ only
Correct Answer
D$$1\sigma$$ and $$3\pi$$

Solution

$$C_{ 2 }$$ molecules have been found in vapour state. Their double bonds are made of two pi bonds because four electrons need to be accomodated in each bond. So this is against the rule that there must be a sigma bond before a pi bond is formed in the double bond. Conclusion: hence the answer option (c) is correct.

SIMILAR QUESTIONS

Chemical Bonding

The molecule having maximum number of sigma bonds in it is:

Chemical Bonding

Considering $$x-$$axis as the internuclear axis, the overlap of which of the following orbitals will not form a sigma bond and why? (a) $$1s$$ and $$2s$$ (b) $$1s$$ and $$ \displaystyle 2 p_{x}$$ (c) $$ \displaystyle 2p_{y}$$ and $$ \displaystyle 2p_{y} $$ (d) $$1s$$ and $$2s$$

Chemical Bonding

The strength of sigma bonds formed by axial overlap of $$s-$$ or $$p-$$ orbitals of $$2nd$$ shell of participating atom decreases as:

Chemical Bonding

Two $$\pi$$ and half $$\sigma$$ bonds are present in:

Chemical Bonding

Calculate the value of "x + y - z" here x,y and z are total number of non-bonded electron pair(s), pie bond(s) and sigma bonds in hydrogen phosphite ion respectively .

Chemical Bonding

In a compound the number of sigma and pi bonds respectively are :

Chemical Bonding

Select correct statements regarding $$\sigma$$ and $$\pi$$-bonds :

Chemical Bonding

How many sigma bonds are present in a molecule of diethyl either $$C_{2}H_{5}OC_{2}H_{5}$$ ?

Chemical Bonding

Which of the following statements is incorrect for sigma and $$\pi$$ - bonds formed between two carbon atoms?

Chemical Bonding

Which of the following statement is/are correct ?

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