Answer:
it will turn blue black to any substance
Answer:
ok
Explanation:
why I needed to give a answer to a question. I want to ask the question. brainly solve this issue. i cant ask questions without answering to 1 questions.
The absolute value of the difference in electronegativity (ΔEN) of two bonded atoms provides a rough measure of the polarity to be expected in the bond and, thus, the bond type. When the difference is very small or zero, the bond is covalent and nonpolar. When it is large, the bond is polar covalent or ionic.