<span> red litmus paper turns </span>blue <span>under basic or alkaline conditions, with the color change occurring over the pH range 4.5–8.3 at 25 °C (77 °F). Neutral litmus paper is purple.</span>
Elements in the same group tend to have very similar properties (D). This is due to the number of valence electrons each group has.
Answer:its b 7
Explanation:
7 is neutral and pure water is the middle man
