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10 questions
A metal high in the reactivity series.....
Forms unstable compounds.
Can be obtained by the reduction of the ore with the carbon.
Readily gains electrons.
Burns to form basic oxides.
Reacts readily with cold water to form Hydrogen.
Metals create _________ ions, because they give away (lose) electrons.
positive
negative
neutral
Which metal is the poor conductor of heat.
Silver
Potassium
Mercury
Iron
Reaction between X and Y forms compound Z. X loses electron and Y gains electron. Which of the following properties is not shown by Z?
Has high melting point
Has low melting point
Conducts electricity in molten state
Occurs as solid
The electronic configurations of three ele¬ments X, Y and Z are X — 2, 8; Y — 2, 8, 7 and Z — 2, 8, 2. Which’of the following is correct?
X is a metal
Y is a metal
Z is a non-metal
Y is a non-metal and Z is a metal
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