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Which outcome primarily occurs when palladium absorbs hydrogen?

A)Lattice expansion lowers mechanical strength
B)Palladium becomes highly electrically resistive
C)Surface oxidation prevents hydrogen diffusion
D)Neutron emission poses radiation risk

💡 Explanation

Lattice expansion occurs due to hydrogen intercalation; the palladium lattice structure expands, weakening its structure. Because hydrogen atoms occupy interstitial spaces, it decreases mechanical strength rather than increasing resistivity; hydrogen absorption does not cause neutron emission.

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