Fill in the blanks.
(a) Phosphorus is a very _________non-metal.
(b) Metals are _________ conductors of heat and ____________ .
(c) Iron is ____________reactive than copper.
(d) Metals react with acids to produce ____________ gas.
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Explanation:
(a) Phosphorus is a very reactive non-metal.
(b) Metals are good conductors of heat and electricity .
(c) Iron is more reactive than copper.
(d) Metals react with acids to produce Hydrogen gas.
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Answer:
1825
1825- 1826
William Sturgeon (British) invents the electromagnet, a coil of wires with an iron core to enhance the magnetic field.
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