Which of the following statements about the element Y whose atomic number is 19 is incorrect?

It belongs to group 1 of the periodic table.

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It is metal.

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Its chloride has the formula YCl.

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It forms anions.

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Solution

The correct option is D It forms anions.
The element Y is Potassium (K). It thus belongs to first group and is a metal. Its chloride has formula KCl (YCl). But it does not form a negative ion as it is a electropositive metal.

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Which of the following statements about the element Y whose atomic number is 19 is incorrect?

The correct option is D It forms anions.The element Y is Potassium (K). It thus belongs to first group and is a metal. Its chloride has formula KCl (YCl). But it does not form a negative ion as it is a electropositive metal.

The correct option is D It forms anions.
The element Y is Potassium (K). It thus belongs to first group and is a metal. Its chloride has formula KCl (YCl). But it does not form a negative ion as it is a electropositive metal.