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Amanda [17]
3 years ago
13

Please help anyone it's a emergency!!!!​

Chemistry
2 answers:
SashulF [63]3 years ago
8 0

Answer:

C because that 3rd planet looks like satern and that is way to far for us to go

Explanation:

Pachacha [2.7K]3 years ago
5 0

Answer:

its the last on e

Explanation:

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What is the change in atomic number when an atom emits a beta particle?
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When an atom emits a beta particle from the nucleus, the nucleus only has one more proton and one less neutron and this will make the atomic mass number remains unchanged while the atomic number increases by 1.

<span>I hope this answer helps you!</span>

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From the list below, choose which groups are part of the periodic table. metals acids flammable gases nonmetals semimetals ores
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The periodic table of the elements are describe the electronic configuration of the elements on which the properties of the elements depends. Among the given groups only metal, non-metal and semi-metal group are the part of periodic table. The metallic property depends upon the binding energy of the electrons with the nucleus. Thus the elements which have the valence electrons more near to the nucleus that is s-block elements are more metallic in nature. On the other hand the elements which have the valence electrons far from the nucleus are more non-metallic in nature like p-block elements. However the binding energy or the attraction of the outermost electrons to the nucleus depends not only its valence electrons position but also some other factors like shielding effect, effective nuclear charge etc.

The elements which are in between the metals and non-metals can be classified as semi-metals.

Although the conductivity of a material is an inherent property of the metals but sometime the nonmetals or semi-metals are also behave like a conductor due to presence of the other elements, thus it cannot be a p[property of the periodic table. Similarly acidity, flammable gases are not part of the periodic table.      

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