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Hatshy [7]
2 years ago
13

14 Answer:

Biology
1 answer:
Levart [38]2 years ago
8 0

<u>Oxygen</u> is the most abundant element in the Earth's atmosphere.

The <u>valence</u> electrons are those found in the outermost energy level of an atom.

In the modern periodic table, elements are arranged in order of increasing atomic numbers. <u>True</u>

Elements can be classified as metals, nonmetals or metalloids. <u>True</u>

Nonmetals are good conductors of heat and electricity. <u>False</u>

Luster is a chemical property of metals. <u>True</u>

Halogens include fluorine, chlorine, bromine, iodine, and astatine. <u>True</u>

<h3>What is an element?</h3>

An element is a substance which cannot be split into simpler units by a ordinary chemical process

So therefore, Oxygen is the most abundant element in the Earth's atmosphere.

  • The valence electrons are those found in the outermost energy level of an atom.
  • In the modern periodic table, elements are arranged in order of their increasing atomic numbers True

Learn more about elements:

brainly.com/question/11252068

#SPJ1

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