A photon has a frequency of 2.9 ~ 10-16 Hz. Planck's constant is 6.63 x 10-34 Jos. The energy of the photon, to the nearest tenths place, is
10-49 J.

atomic number of carbon is 6

electronic configuration of carbon is 1s²2s²2p²

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

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explanation:

its first and third is your answer i did the qustion the fourth isnt right

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.