Explanation:
abrasion, pressure release, thermal expansion and contraction and crystal growth.
No 6 is common for N and H. 3 is only for H(Hydrogen).
For finding the number of hydrogen atoms we should multiply 6 with 3
So, 6*3 = 18. So there will be 18 hydrogen atoms in 6NH₃
The deeper down you get, the colder the water is
squeeze the fingers of the glove because of imcrease pressure
