what is the atomic weight of Se, if S,Se,Te are dobereiner triads
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Answer:
Atomic weight of Se = 79u
Explanation:
S | Se | Te
Sulfur has atomic mass of 32u
Tellurium's atomic mass is 127u
Atomic mass of Se = Mean of S and Te atomic mass
= 32 + 127 /2
= 159 /2
= 79u
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