An element has atomic number 13. Which of the following statements related to this element is wrong?
The element is placed in the third period of the periodic table.
The atom has 13 protons.
The element is placed in group IV in the periodic table.
The formula of its oxide is X2O2.
A
The atom has 13 protons.
B
The element is placed in the third period of the periodic table.
C
The formula of its oxide is X2O2.
D
The element is placed in group IV in the periodic table.
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Solution
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Elements with atomic number = 13 has 13 protons and 13 electrons.
After atomic number 10, 3rd periods starts.
The configuration of element is : (2,8,3). So it belongs to group III
The valency of compound is 3. So the formula of oxide should be X2O3.
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