Which is correctly balanced decompostion reactionfor silver oxide

that's what i got you can count the number of atoms

1. a)c-14 has two more protons

2. d)they have different numbers of protons, neutrons, and valence electrons; they are all gases at room temperature.

3. c) iron and nickel.

metric time was an attempt to create a standard unit of time based off of 10, but it never took off an is not included in the metric system (si)