Apotassium atom easily loses its one valence electron. what type of bond will it form with a chlorine atom?

Potassium, an alkali metal in group 1 of the periodic table will definitely lose an electron to a more electronegative element very easily. In fact, the potassium will effectively completely lose its electron, making it carry a +1 charge, which makes it a positive ion (a cation). A chlorine atom, which is very electronegative (due to its place in group 7 called the halogens), would happily accept the electron from the potassium, and effectively have one extra electron, leaving it with a -1 charge, making it a negative ion (an anion). When two ions form a bond together, much like the chloride ion and the potassium ion, they form an extremely strong bond called an ionic bond.

Mgo2 is the oxidation state of manganese oxide

Spontaneity tell us the direction of the reaction, but not how fast it goes. gibbs free energy brings together enthalpy, entropy and temperature in one easy formula. g = h - ts. and, finally the sign of delta g is always negative for a spontaneous reaction.