Electronegativity increases when atoms . A. are located on the right on the periodic table
B. have a large atomic radius
C. have a small atomic radius
D. are located on the left on the periodic table

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.

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