Answer:
Transitional metals are good conductors of both heat and electricity.
But since there aren't any. It could be Calcium.
Do you know what is meant by needed? does it mean lone pairs?
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Answer:
b. Cu(OH)2
Explanation:
As it is having Hydroxil ions(OH).
Answer:
2 Hertz
Explanation:
<em>The frequency would be 2 Hertz.</em>
<u>The frequency of a wave is defined as the rate at which the particles of a medium vibrates when the wave is passed through it while the period of a wave is the time it takes the particles to make a complete cycle of vibration.</u>
The frequency of a wave is inversely related to its period and is defined by the following equation:
f = 1/t, where f is the frequency (in hertz) and t is the period (in seconds).
Hence, if the period of a ripple is 1/2 or 0.5 seconds, the frequency becomes;
f = 1/0.5 = 2 Hertz