What is the ground state electron configuration of carbon? 1s^2 2s^22p_x^1 1s^2

Question

What is the ground state electron configuration of carbon? 1s^2 2s^22p_x^1 1s^2 2s^2 p_x^2 1s^2 2s^2 2p_x^12py^1 1s^2 2s^2 2p_x^2 2p_y^1 What is the letter designation given to dumbbell shaped orbitals like the one below? s p d f Which of the following does not have an octet of electrons surrounding the central atom? BH_3 CH_4 NH_3 H_2O Which of the following has a triple bond? O_2 Cl_2 CN^- OH^- Identify the condensed formula of the following structure: (CH_3)_2CHCHClCH(CH_3)_2 CH_3CH(CH_3)CHClCH(CH_3)_3 (CH_3)_2CHCHClC(CH_3)_3 (CH_3)_3CCHClCH(CH_3)_3 Which of the following species is the least stable resonance form of the nitrate ion, NO_3^-.

Explanation / Answer

1. C) 1s2 2s2 2px1 2py1

2. dumbbell shape = p-orbital

answer: B) p

3. A) BH3 on boron only 6 electrons are present.

4. C) CN-

5. c

6. B (-ve charge is on N-atom , which is less electronegative than O-atom.so that it is unstable)

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