This is how zirconium appears in the periodic table. rounded to the nearest whole number, how many electrons are in an atom of zirconium? 40 zr 40 51 91 131 zirconium 91.22

How does a circuit breaker protect a refrigerator? a. when the current is too high, a metal strip in the fuse melts and opens the circuit. b. when the resistance is too high , a re-settable which opens a circuit c. when the current is too high , a re-settable switch opens the circuit d. when the resistance is too high a metal strip in the fuse melts and opens the circuit