The electron configuration of an element is 1s22s22p4. Describe what most likely happens when two atoms of this element move toward each other.

Two atoms of this element move toward each other and they are attracted.

Explanation:

Given that,

The electronic configuration is

We need to find what happens when two atoms of this element move toward each other

According to given configuration,

This element is oxygen.

The electron in outer shell of this atom is 6.

Oxygen needs the 2 electron for complete the outer shell and make a stable.

So, two atoms of this element move toward each other and create a covalent bond which is shear the electron to each other and make a stable element.

In covalent bond,

The attraction force create between the molecules.

So, we can say that, when two atoms of this element move toward each other then they are attracted.

Hence, Two atoms of this element move toward each other and they are attracted.

the enthalpy of formation of water is given as -285.8kj/mol, which states that the enthalpy of formation is negative.

negative enthalpy of formation indicates that the heat is released during the reaction process. the heat is released from reaction to the surroundings the enthalpy is expressed with a negative sign with the energy given out in the reaction process.

the formation of water takes place by giving out heat which is -285.8 kj/mol.