plz answer all of theses quetions 19. How many electrons are in a single Ab ion?
ID: 541239 • Letter: P
Question
plz answer all of theses quetions
19. How many electrons are in a single Ab ion? (A) 3 (8) 10 (C) 13 (D) 27 (E) not yet known 20. Which of the following is a compound? (A) gold (B) copper (C) table sugar (sucrose) (D) blood (E) orange juice 21. Which of the following is an element? (A) pure water (8) milk (C) carbon dioxide gas (D) oxygen gas (E) orange juice 22. Which of the following is not a pure substance? (A) saline solution: table salt dissolved in water (B) oxygen gas (C) carbon dioxide gas (D) baking soda (E) carbon monoxide gas 23. Which of the following is the correct formula for lithium monohydrogen phosphate? (A) LiHPO4 (B) L2HPOs (C) Li2HPO (D) LiH2PO 24. What is the charge of the Ruthenium ion in Rus(PO)2? (C) +3 (D)-3 (E)-2Explanation / Answer
19)
atomic number of Al = 13
Al3+ is formed after Al loses 3 electrons
So,
number of electrons in Al3+ is 10
Answer: B
20)
Answer: C
A and B are elements
D and E are mixtures
21)
Anwser: D
E is mixture
A,B,C is compound
22)
Answer: A
A is a solution of two compounds
I am allowed to answer only 1 question at a time
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