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Byju's Answer
Standard VII
Chemistry
Symbol of an Element
Which amongst...
Question
Which amongst the following elements is incorrectly matched to its symbol?
A
Sodium - N
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B
Calcium - Ca
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C
Potassium - K
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D
Magnesium - Mg
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Q.
Which sequence indicates correctly the increasing reactivity of metals?
(a) iron, zinc, magnesium, sodium, potassium
(b) sodium, potassium, magnesium, zinc, iron
(c) magnesium, potassium, sodium, iron, zinc
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