Single Choice

Element $$X$$ forms a chloride with the formula $$XCl_2$$, which is a solid with a high melting point. $$X$$ would most likely be in the same group of the Periodic Table as:

A$$Na$$
B$$Mg$$
Correct Answer
C$$Al$$
D$$Si$$

Solution

Elements of group $$Na$$ form $$XCl$$ halide.
Elements of group $$Mg$$ form $$XCl_2$$ halide.
Elements of group $$Al$$ form $$XCl_3$$ halide.
Elements of group $$Si$$ form $$XCl_4$$ halide.

As an element, $$X$$ forms a chloride with the formula $$XCl_2$$, which is solid with a high melting point. $$X$$ would most likely be in the same group of $$Mg$$.

SIMILAR QUESTIONS

Periodic Classification of Elements

Considering the chemical properties, atomic weight of $$Be$$ was corrected based on:

Periodic Classification of Elements

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Periodic Classification of Elements

In the Modern Periodic Table, calcium (atomic number $$20$$) is surrounded by elements with atomic numbers $$12, 19, 21$$ and $$38$$. Which of these have physical and chemical properties resembling calcium?

Periodic Classification of Elements

In the modern periodic table, how does the atomic size of the elements vary along the period and down the group? Explain.

Periodic Classification of Elements

Explain why the following is not correct : Reactivity increases with atomic number in a group as well as in a period.

Periodic Classification of Elements

In general, the properties that decrease and increase down a group in the periodic table, respectively, are:

Periodic Classification of Elements

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Periodic Classification of Elements

Which of the following is not a periodic property for the elements?

Periodic Classification of Elements

Two elements $$X$$ and $$Y$$ contain only one electron in the outer level. Element $$X$$ is reactive and loses electron easily while element $$Y$$ is relatively unreactive and non-corrosive. The elements $$X$$ and $$Y$$ respectively are:

Periodic Classification of Elements

State the trends in chemical reactivity : down the group

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