The correct answer is option 1. Be, Mg, and Ca is the correct order arranged in increasing atomic radius. This is predicted based on the periodic table. The atomic sizes increases as one moves downwards in the periodic table.
I need details to solve for you
The one that is observed or measured in the experiment, and it is known as the dependent variable.
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Answer:
light energy is a form of electromagnetic radiations of a wavelength, which can be seen by the human eye.
