11 grade chemistry others
Which of the following is (are) Dobereiner’s triads?A. P, As, SbB. Cu, Ag, AuC. Fe, Co, NiD. S, Se, Te
Which of the following is (are) Dobereiner’s triads?A. P, As, SbB. Cu, Ag, AuC. Fe, Co, NiD. S, Se, Te
1 Answer
Askiitians Tutor Team
Dobereiner's triads are groups of three elements with similar chemical properties, where the atomic mass of the middle element is approximately the average of the atomic masses of the other two elements.
From the options provided:
A. P (Phosphorus), As (Arsenic), Sb (Antimony) - These elements form a Dobereiner's triad.
B. Cu (Copper), Ag (Silver), Au (Gold) - These elements do not form a Dobereiner's triad.
C. Fe (Iron), Co (Cobalt), Ni (Nickel) - These elements do not form a Dobereiner's triad.
D. S (Sulfur), Se (Selenium), Te (Tellurium) - These elements do not form a Dobereiner's triad.
So, the correct answer is:
A. P, As, Sb
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