If number of resonating structures of Benzene, Napthalene, Anthracene and phenanthracene are x , y , z and w , where at least one benzenoid structures is present then correct relation is/are :

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Kekulé structures: Benzene (2), Naphthalene (3), Anthracene (4), Phenanthrene (5). Thus, $x = 2, y = 3, z = 4, w = 5$ .

$x + w = 2 + 5 = 7$ . $y + z = 3 + 4 = 7$ . So, $x + w = y + z$ .

$w^{2} = 5^{2} = 25$ . $z^{2} + y^{2} = 4^{2} + 3^{2} = 16 + 9 = 25$ . So, $w^{2} = z^{2} + y^{2}$ .

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