What is the recommended way of preparing 100ml of 0.02 from 2m naoh in the laboratory?

Dilute 1 ml of 2M solution to 100 ml

Explanation:

C₁V₁=C₂V₂

V₁=C₂V₂/C₁=

=100×0.02/2=1ml

the density(ratio between mass and volume as m/v) decreases from top to bottom in periodic table group as the size increases and nuclear charge decreases. but in periods density increases from left to right as atom size decreases and nuclear charge increases.