In their body
5 pairs
They help in flow of blood.
Butterflies have nine pairs of spiracles. These are pores open to the air and tracheae which carry air through the body of an insect. Spiracles are located on the abdomen and thorax.
4
23 pairs
3 pairs
12 pairs like human
There are three lone pairs present in chlorine atom
3
two
46 pairs
The Si has no lone pairs, but each F has 6 lone pairs. Thus 6 x 4 = 24 lone pairs, total.
46 (23 pairs)