Answered Sep 01, 2022
Answer: Option 4
Yttrium is not an isotope of hydrogen.
Answer: Option 2 According to the reactivity series , elements which are above of hydrogen can replace hydrogen. Hence Sodium will replace hydrogen from acids to form salts.
Answer: Option 2 Cadmium does not react with water to produce hydrogen.
Answer: Option 4 Let'
Answer: Option 1 Mass number is an integer equal to the sum of the number of protons and neutrons of an atomic nucleus.
Answer: Option 3 Let'
Answer: Option 1 Let'
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