To how many significant figures can you report your measurement of the mass the nacl sample?

Sodium chloride, NaCl, sample are usually used in many laboratory testings and experiments. The mass required for samples are usually just below 10 g. The most accurate readings for this mass is through which there are 2 decimal places. Thus, the highest number of significant  figures that can be reported for such is only 4. 

atomic number of carbon is 6

electronic configuration of carbon is 1s²2s²2p²

orbital diagram of c is as shown here in the image.

the positions which points up in upward carbon and down in downward carbon are axial

and vice versa holds true for equatorial positions

so the correct answer with labelled diagram will be