How many electrons does a nickel (iii) ion have?

1. 31
2. 28
3. 3
4. 25

Which statement describes how phase changes can be diagrammed as a substance is heated? the phase is on the y-axis and the temperature is on the x-axis. the temperature is on the y-axis and the phase is on the x-axis. the time is on the y-axis and the temperature is on the x-axis. the temperature is on the y-axis and the time is on the x-axis.

Which position represents spring in the southern hemisphere? a) b) c) d)

What type of matter is made of only one kind of atom