WorksheetsF3 Chem Ch7-01
Total questions: 10
Worksheet time: 10mins
Which of the following ions is colourless in its aqueous solution?
Cu2+
Cr3+
Cr2O72-
Cs+
Which of the following species have the same electronic arrangement as an neon atom?
(1) F-
(2) Mg2+
(3) S2-
(1) and (2) only
(1) and (3) only
(2) and (3) only
(1), (2) and (3)
Which of the following species have the same electronic arrangement as an argon atom?
(1) K+
(2) Al3+
(3) Cl-
(1) and (2) only
(1) and (3) only
(2) and (3) only
(1), (2) and (3)
Which of the following ions are green in its aqueous solution?
(1) Cu2+
(2) Fe2+
(3) Cr3+
(1) and (2) only
(1) and (3) only
(2) and (3) only
(1), (2) and (3)
Which of the following pairs has the same electronic arrangement?
Na+ and K+
Cl- and Br-
S2- and Cl-
K+ and Br-
An atom X of a solid element forms a X3- ion. What is the atomic number of X?
13
15
17
19
