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3 years ago

Which nonmetal is the "wrong" place on the periodic table?

2 answers:

8 0

There is no picture so I can't say the answer please update your post with the image BECUASE all non metals are located in the same group in the periodic table

bixtya [17]3 years ago

4 0

Answer:

The correct answer is: Hydrogen

Explanation:

The periodic table is defined as the tabular arrangement and classification of the chemical elements. This table contains seven rows, called periods; and eighteen columns, called groups.

Generally, the metals are present on the left and the non-metals are present on the right of the periodic table.

However, Hydrogen (atomic number 1) is the only non-metal that is placed in group 1, on the left-side of the periodic table. This is because according to the electronic configuration of hydrogen (1s¹), it should be placed in group 1 of the periodic table.

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3 years ago

Calculate the number of moles of magnesium, chlorine, and oxygen atoms in 5.90 moles of magnesium perchlorate, Mg(ClO4)2.

Lady bird [3.3K]

Answer:

5.90, 11.8, 47.2

Explanation:

Let’s remove the parentheses and write the formula as MgCl₂O₈.

We see that 1 mol Mg(ClO₄)₂ contains 1 mol Mg atoms, 2 mol Cl atoms, and 8 mol O atoms.

∴ $\text{Moles of Mg atoms} = \text{5.90 mol Mg(ClO}_{4})_{2} \times \frac{\text{1 mol Mg atoms}} {\text{1 mol Mg(ClO}_{4})_{2}} = \text{5.90 mol Mg atoms}$

$\text{Moles of Cl atoms} = \text{5.90 mol Mg(ClO}_{4})_{2} \times \frac{\text{2 mol Cl atoms}} {\text{1 mol Mg(ClO}_{4})_{2}} = \text{11.8 mol Cl atoms}$

$\text{Moles of O atoms} = \text{5.90 mol Mg(ClO}_{4})_{2} \times \frac{\text{8 mol O atoms}} {\text{1 mol Mg(ClO}_{4})_{2}} = \text{47.2 mol O atoms}$

∴ Mg, Cl, O = 5.90, 11.8, 47.2

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3 years ago