The atomic number of chlorine is 17. What is the number of electrons in a chloride ion?
16
17
18
19
Correct answer is C
No explanation has been provided for this answer.
naturally radioactive
abundant in nature
a transition metal
an isotopic mixture
Correct answer is D
No explanation has been provided for this answer.
Waste plastics accumulate in the soil and pollute the environment because plastic materials are
insoluble in water
non-biodegradable
easily affected by heat
inflammable
Correct answer is B
No explanation has been provided for this answer.
Acidic industrial waste can be treated with
lime
brine
water
enthanol
Correct answer is A
No explanation has been provided for this answer.
Ag → Ag+ + e-
Ag+ + e- → Ag
2Ag + Br22 → AgBr
Ag+ + Br- → AgBr
Correct answer is B
No explanation has been provided for this answer.