Which best describes the trends in electronegativity on the periodic table?

On the periodic table, electronegativity generally

1. decreases as you move down a group and

2. increases as you move from left to right across a period.

Therefore, the most electronegative elements are found on the top right of the periodic table, while the least electronegative elements are found on the bottom left.

2h2o2--> 2h2o + o2

this reaction is of the spontaneous decomposition of hydrogen peroxide down into water and oxygen.

add 2 molecules of hydrogen peroxide and 2 molecules of water. since oxygen is naturally diatomic, the total number of atoms of each element is now the same on both sides of the equation so it is balanced.

this may not be entirely correct but let me know.

the answer would be c