Give examples of one element from the alkali metals group and one from the halogens group. Include each element's atomic number, atomic mass, number of neutrons, number of valence electrons, number of electron shells, and some common characteristics of elements from its group.

in the given question, the partial pressure is calculated by using the ideal gas equation, that is, pv = nrt

here, p is pressure, v is volume = 25 l, n is number of moles = 0.0104 moles, r is gas constant = -0.0821 l.atm / mol.k

t is temperature = 273 k

p = nrt / v

p = (0.0104 mol × 0.0821 l.atm / mol.k × 273 k) / 25 l

= 0.0093 atm

c. is the answer

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