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Zanzabum
3 years ago
10

Why do the elements in a group all behave similarly

Chemistry
1 answer:
Svetradugi [14.3K]3 years ago
6 0

Answer:

See the explanation below, please.

Explanation:

The elements of the periodic table that belong to the same group (each column) have similar physical and chemical properties. This is because they have the same number of electrons in their last electronic layer.

Example of electronic configuration of elements of GROUP IA:

Hydrogen: 1s ^ 1

Lithium: 1s ^ 2 2s ^ 1

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Answer is: the partial pressure of the helium gas is 0.158 atm.

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Hello there!

In this case, according to the given chemical reaction for this problem about stoichiometry:

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m_{Fe_2O_3}=165gO_2*\frac{1molO_2}{32.00gO_2}*\frac{2molFe_2O_3}{3molO_2} *\frac{159.69gFe_2O_3}{1molFe_2O_3}  \\\\m_{Fe_2O_3}=549gFe_2O_3

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