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2 years ago

The elements in groups 1a through 7a are

Chemistry

2 answers:

Semmy [17]2 years ago

4 0

1A alkali metals

2A alkali earth metals

3B-2B transition metals

7A halogens

8A noble gases

REY [17]2 years ago

3 0

The elements in groups 1a through 7a are called d. representative elements. The periodic table is organized according to increasing order of the atomic number of the elements. Groups have similar properties while the period of the elements determines the valence electrons in the outer shells.

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List any two types of mixtures that are not covered in the Exploration. Also mention the state

marishachu [46]

This question is incomplete because you lack the options. But it can be answered based on my knowledge.

Two types of mixture could be: homogeneous and heterogeneous

A mixture is a term that refers to the combination of two or more components joined but not chemically combined. Mixtures can be classified as follows:

Homogeneous: Are characterized by having a uniform texture and appearance, their components are not distinguished.
For example: water + grapes = wine

Homogeneous mixtures can be:

Solutions: The mixtures formed are characterized by being formed with components that do not react chemically with each other, but that can modify their physical properties when they become part of the solution.
For example: coffee + milk = Coffee

There are also Colloids, a type of mixture formed by particles of one or more substances that are dispersed in another substance called a dispersing medium.

For example Gelatin powder + Water = Gelatin.

They are the intermediate mixtures between homogeneous and heterogeneous.

Heterogeneous: Are mixtures in which it is possible to observe their components due to the discontinuity with the naked eye.
For example Milk + cereal = Cereal

Learn more in: brainly.com/question/24713315

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2 years ago

Which response includes all the following that are properties of most metals, and no other properties?

oksian1 [2.3K]

Answer:

The correct options are: Z1) They tend to form cations, and Z4) They tend to form ionic compounds when they combine with the elements of Group VIIA.

Explanation:

The chemical elements that have a tendency of losing their valence electrons and are generally present on the left-side of the periodic table are known as metals.

The general characteristics of metals are malleability, ductility, lustre, high thermal and electrical conductivity.

The metals readily lose their valence electrons present in their valence electron shell to form positively charged ions called cations and thus have low ionization energy.

They also tend to form ionic compounds or salts with the reactive non-metals belonging to the Group VIIA of the periodic table.

Therefore, Z1 and Z4 are the properties of most metals.

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2 years ago