100 brainliest if

which of these formulas represents 1 atom of sodium (na) chemically combined with another element?
a. pbs
b. nacl
c. 2naoh
d. down below

➷ The correct option would be B. NaCl

Extra info on why it is correct:

Sodium has one electron in its outer shell and chlorine has seven electrons in its outer shell. When they bond, sodium would have a positive charge and chlorine would have a negative. However, these two charges balance each other out.

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The answer is B.

NaOH is one atom of sodium chemically combined with another element

iron and sleel

make siroeel

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.