2-He An amazing square

Today we propose you a game that can be easily performed at home, with friends, for family, at school.

We will be restrinting to 16 elements of the Periodic Table, and consider the square delimited by Boron, Indium, Oxygen and Teliurium. This square gathers various elements key to our day-to-day lives: first, Carbon, a key element for organic molecules that build up living beings. Same for Nitroen and Oxigen. Further, Oxygen is part of water, along with Hydrogen, and is necessary for breathing. Aluminum is a key metal in our civilizatin, Silicom in semiconductors, e.g., in computers (and in glass too). Phosporus and Sulfur are also necessary in living beings and minerals containing them are quite appreciated. Moreover, Tin has been know since ancien times, for instance to form Bronze, an alloy when mixed with Copper.

This is, thus, a square delimiting 16 elements of the Periodic Table that are very valuable to all of us. The steps you will have to follow are these:

1.- Choose any numer in the square. Anyone you prefer. Surround it with a circle (in my example I have chosen Ge).

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2.-Cross out all elements located at right, left, up and down of the element chosen above

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3.- Choose one of the elements that are not crossed yet. (For instance, I choose S)
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4.- Cross out all the elements located at right, left, up and down of the element just chosen

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5.-  Chose one of the still uncrossed elements (e.g. you can choose In)

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6.- As before, cross out all the elements located at right, left, up and down of that element

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7.- Finally, choose now a new element that has no cross yet (in our example, we choose N)

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8.- Write down the atomic numbers of the elements that are inside a circle. Add up those 4 numbers.

9.-  Remember you have chosen the elements in the way you wanted to do so. Now, go to the periodic table and look for the chemical element having as atomic number the result in the previous addition.

10.- Is it Rutherfordium? If it is, you should congatulate us because we are great scientists and amazing magicians. If it is not, please check calculations you have performed. Science must be right.

As a matter of fact, Rutherfordium is a synthetic element, that takes slightly more than an hour to radioactively decay and have its mass cut in half (the so-called halflife). Its name is a tribute to Ernes Rutherford, researcher of radioactive decay and Nobel Prize in Chemistry in 1908.

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