Answer:
The reactivity of metals increases as you move left in a period and as you move down in a group, so Marie needs to know the period and group of the element inside each box. Boxes that show locations in groups 1 or 2 or in period 8 contain the most reactive elements.
Explanation:
Mechanical energy<span> is the sum of kinetic and potential </span>energy<span> in an object that is used to do work. In other words, it is </span>energy<span> in an object due to its motion or position, or both.
Hope this helped XD</span>
Hello!
Yes, someone with an IQ score of 120 can be gifted.
An IQ score of 120 means that the individual is moderately gifted. Although this IQ doesn't qualify for gifted education programs, research shows that people with IQs of about 145-180 don't perform significantly better than people with 120s IQ in terms of success.
As an example, professor Dean Simonton from the University of California found that an optimum leader should have an IQ in the 120-125 range, so having an IQ of 120 would mean that the individual is gifted for leadership.
Have a nice day!
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Answer:
The Minimum wavelength is 
The Maximum wavelength is 
Explanation:
From the question we are told that
The energy range is 
Considering 
When a single photon is transferred to to an electron the energy obtained can be calculated as follows
This energy is mathematically represented as
Here h is the Planck's constant with value of 
c is the speed of light with value of 
Substituting values and making 
the subject of the formula
Considering 
When a single photon is transferred to to an electron the energy obtained can be calculated as follows
This energy is mathematically represented as
Substituting values and making the subject of the formula
