The electron configurations of four different elements are shown below. Element 1: 1922s²2p3
Element 2: [Ne 3s 3p4
Element 3: Kr]58
Element 4: Xe 6s?
Based on their electron configurations, which of the following two elements are most likely to form an ionic
compound with the empirical formula XY?

atomic number of carbon is 6

electronic configuration of carbon is 1s²2s²2p²

orbital diagram of c is as shown here in the image.

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.

c

explanation: