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4 years ago

When looking across the periodic table from left to right, which is the first group that contains nonmetals?

Chemistry

2 answers:

Westkost [7]4 years ago

7 0

It would be group 1 because of hydrogen but since it's not there the other group is group 14.

ehidna [41]4 years ago

5 0

Answer:

When looking through the periodic table from left to right, the first group containing nonmetals is 14.

Explanation:

When looking through the periodic table from left to right, the first group containing nonmetals is 14.

The groups are classified as follows:

I: alkaline (<em>hydrogen does not enter in this classification</em>)

II: alkaline earth

III to XII: transition metals

XIII: Boron Series (Halogen)

XIV: Carbon Series

XV: nitrogen series

XVI: oxygen series

XVII: fluorine series

XVIII: noble gases

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What mass of magnisium bromide is formed when 1.00 g of Mg + br

ella [17]

Mass of Magnesium bromide : 5.76 g

<h3>Further explanation</h3>

Complete question

<em>What mass of Magnesium bromide is formed when 1.00 g of magnesium reacts with 5.00 g of bromine?</em>

<em />

Reaction

<em /> $\tt Mg+Br_2\rightarrow MgBr_2$ <em />

mol Mg

$\tt \dfrac{1}{24}=0.042$

mol Br₂

$\tt \dfrac{5}{160}=0.0313$

Limiting reactants : Br₂(smaller)

mol MgBr₂ = mol Br₂=0.0313

mass MgBr₂ :

$\tt 0.0313\times 184,113 =5.76~g$

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3 years ago

Elements are organized into groups / families according to their physical and chemical properties. Identify the elements that's

Kryger [21]

Answer:

1 valence - Alkali Metals: Li Lithium, Na Sodium, K Potassium

2 valence - Alkaline Earth Metals: Be Beryllium, Mg Magnesium, Ca Calcium

3 valence - Non-metals: B Boron, Al Aluminium

4 valence - Non-metals: C Carbon, Si Silicon

5 valence - Non-metals: N Nitrogen, P Phosphorus

6 valence - Non-metals: O Oxygen, S Sulfur, Se Selenium

7 valence - Halogens: F Fluorine, Cl Chlorine, Br Bromine

8 valence - Noble Gases: He Helium, Ne Neon, Ar Argon

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4 years ago

What is the coefficient of H2O when the following equation is properly balanced with the smallest set of whole numbers? ________

LiRa [457]

The given question is incomplete. The complete question is :

What is the coefficient of $H_2O$ when the following equation is properly balanced with the smallest set of whole numbers? $PCl_3(l)+H_2O(l)\rightarrow H_3PO_3(aq)+HCl(aq)$

Answer: The coefficient of $H_2O$ is 3

Explanation:

According to the law of conservation of mass, mass can neither be created nor be destroyed. Thus the mass of products has to be equal to the mass of reactants. The number of atoms of each element has to be same on reactant and product side. Thus chemical equations are balanced.

The balanced chemical reaction is:

$PCl_3(l)+3H_2O(l)\rightarrow H_3PO_3(aq)+3HCl(aq)$

The coefficient of $H_2O$ is 3

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3 years ago

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Gas are well separated with no regular arrangement. liquid are close together with no regular arrangement. solid are tightly packed, usually in a regular pattern.

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