Phosphorus atom require to form 3 single covalent bond to have a complete octet in its valence shell. Phosphorus has a electron configuration 2.8.5 hence require to gain three electrons to acquire the octet electron configuration that is an electron configuration of 2.8.8.
Atomic number of phosphorous is 15 and its electronic configuration is .
As there are 3 valence electrons in a single phosphorous atom. Therefore, to attain stability it will readily lose three electrons and thus forms a charge.
For example, in there will be sharing of electrons between the phosphorous and chlorine atom.
Hence, a phosphorous atom can share its three valence electrons and thus forms three covalent bonds to have a complete octet in its valence shell.
The heat required to raise the temperature to a specific temperature change of a sample is related to the specific heat capacity of the substance. In this case, the heat can be calculated through mCpΔT = 350 g * 0.39 J/g C *25 C. This is equal to 3412. 5 Joules. Closest answer is C.
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liquefies at
. About 1% of the air is still gas composed of the noble gas Argon, Ar.