Question

What type of atomic orbitals do oxygen and boron use in h2o and BF3 molecules?​

Answer 1

They use sp³ and sp² hybridised orbitals respectively.

Hope you got it now.

Answer 2

Answer:

Explanation:

In case of water (H₂O)

oxygen having a 8 electrons arranged in (1S)2,(2S)2,(2Px)1,(2Py)1,(2Pz)0 in ground state.

In exited state, 1 electron from 2s orbital goes to 2pz orbital and exited state electronic configuration is  (1S)2,(2S)1,(2Px)1,(2Py)1,(2Pz)1

Now these orbitals (i.e. (2S)1,(2Px)1,(2Py)1,(2Pz)1) combine to give SP3 orbitals. These orbitals make bonds with 1s orbital of each Hydrogen atoms.

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similarly;

Boron have 5 electrons (1S)2,(2S)2,(2Px)1,(2Py)0,(2Pz)0.

In exited state, 1 electron from 2s orbital jumps to 2Py and electronic configuration becomes (1S)2,(2S)1,(2Px)1,(2Py)1,(2Pz)0

Now these orbitals [i.e. (2S)1,(2Px)1,(2Py)1] combine to give Sp2 hybrid orbitals.

Note- Here Boron have one vacant orbital (i.e. 2Pz)

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Amrit ⭐

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