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Answer:
p = number of protons = atomic number
p = 5 (given)
Therefore, the specie X is Boron because the atomic number of Boron is 5 .
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Answer:
number of protons=number of electrons in an atom
vallancy of x=2,3 (Boron)
vallancy of y=2,8,3 (Aluminium)
so y lose its valence electrons easily because it is more far away from nucleus than of x
so y applies less control on its valence electrons than of x
so y
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