Reaction

​A **Reaction** is a reaction that produces a higher atom.

## Simple Reaction

A simple reaction occurs when two similar atoms are next to a Plus Atom. The two atoms combine to fill the Plus, resulting in an atom of one higher value.

For example, two Nitrogen (N, 7) atoms react with a Plus to form one Oxygen (O, 8) atom

## Chain Reaction

After a simple reaction, it may happen, that the two atoms adjacent to the atom in the middle have the same value. In this case, a chain reaction occurs. The two atoms also fuse with the atom in the middle and create a higher valued atom. The progress continues as long as the following chain is symmetric (i.e. the atoms following the first two have corresponding values too).

Possible chain reactions are marked by the game with highlighting the circle line around the circle of atoms.

### Rules

* If the "combining atoms" are **smaller in value than** the "middle atom" during the chain reaction, one is added to the middle atom.
* If the "combining atoms" are **equal to or larger than** the "middle atom" during the chain reaction, two is added to the combining atom.

### Tips

Let's say you have three different possible reactions, and you want to pick which one is the best.

```
Li, Li, F + F, Li, Li
Li, F, Li + Li, F, Li
F, Li, Li + Li, Li, F

```

* If you're aiming to form high-value atoms, place atoms of highest value in the middle or second place of the chain reaction.
	+ In the first reaction, the two fluorine atoms fuse to form a Neon (Ne, 10) atom, which then fuses with the two lithium pairs to form a **Magnesium (Mg, 12) atom**.
	+ In the second, the two lithium atoms fuse to form a Beryllium (Be, 4) atom, which then fuses with the fluorine pair. Since F is larger in value than Be, a +2 reaction occurs, forming a Sodium (Na, 11) atom, which fuses with another lithium pair to form a **Magnesium (Mg, 12) atom**.
	+ In the third, the four lithium atoms fuse to form a Boron (B, 5) atom, which then fuses with the fluorine pair. Since F is larger in value than B, a +2 reaction occurs, but the reaction only forms a **Sodium (Na, 11) atom**.
* If you're aiming to get a high score, place atoms of highest value in second place for a few more points.
	+ In the first reaction, the two fluorine atoms fuse for 15 points, which then fuses with the two lithium pairs for 22 and 30 points, earning a total of 67 points.
	+ In the second, the two lithium atoms fuse for 6 points, which then fuses with the fluorine pair. A +2 reaction occurs, forming 34 points, which fuses with another lithium pair for 30 points, earning a total of 70 points.
	+ In the third, the four lithium atoms fuse to form a Boron atom for 6 and 10 points, which then fuses with the fluorine pair. A +2 reaction occurs, forming 40 points, earning a total of 56 points.

## ​Lucky Charms

A reaction is modified by the following Lucky Charms.

* The Copper Lucky Charm or Cobalt Upgrade increases the score from chain reactions by 20%.
* The Selenium Lucky Charm has a 50% chance of increasing the value of reactions by 1. In other words, a normal +1 reaction has a chance of becoming a +2 reaction. The Germanium Upgrade does the same, but only at a 35% chance.