Chemistry
JAMB 2009
If an atom is represented as \( _{11}^{23}X \), which of the following deduction is correct?
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A.
it contains 12 protons
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B.
it forms a covalent chloride
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C.
its atomic number is 23
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D.
it is an alkali metal
Correct Answer: Option D
Explanation
Sodium has atomic / proton number of 11 and belongs to Group 1[alkali metals] on the periodic table
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