Rubidium has an atomic number of 37. it can lose 1 electron to form an ion. what would its charge be

It will carry a charge of +1 units.

Explanation:

Ions are formed when an atom looses or gains electrons.

When an atom looses its electrons, it will lead to the formation of positively charged ion known as cation.

When an atom gains electrons, it will lead to the formation of negatively charged ion known as anion.

Rubidium is the 37th element of the periodic table having electronic configuration of

We are given that this element looses 1 electron and thus, it will lead to the formation of a positively charged ion carrying a 1 unit of charge.

The ion formed will be

Hence, it will carry a charge of +1 units.

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.