Identify the correct answer:
1. Electronegativity is the tendency of an atom to attract __________ electrons.
2. The Pauling scale is used to measure __________.
3. Fluorine has the highest electronegativity value of __________.
4. If electronegativity difference is greater than 1.7, the bond is __________ in nature.
5. If electronegativity difference is less than 1.7, the bond is __________ in nature.
6. Electronegativity __________ across a period and __________ down a group.