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A-level Chemistry Year 1
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Solution X reacts with barium chloride solution to form a white precipitate.
Which of the following could be the identity of X(aq)?
Solution X reacts with copper carbonate solid to give effervescence.
Which of the following could be the identity of X(aq)?
A sample of X(aq) was added to potassium hydroxide solution and warmed, the gas produced turned red litmus paper blue.
Which of the following could be the identity of X(aq)?
X is a particle with 18 electrons and 20 neutrons. Which of the following particles could be X?
1: 38Ar
2: 40Ca2+
3: 39K+
The electron configuration of element X is: 1s22s22p4
What is the formula of a compound formed when barium reacts with element X?