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NARA [144]
3 years ago
10

PLEASE HELP! DUE in 5 minutes

Chemistry
2 answers:
timofeeve [1]3 years ago
5 0

Answer:

Fluorine-18

Explanation:

An isotope is an element with different amounts of neutrons.  The element itself will not change.

photoshop1234 [79]3 years ago
3 0
The Correct answer is Bbbb
Oxygen
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The discovery of protons and electrons most directly refuted or replace the idea that
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Answer:

The atom resembles plum pudding

Explanation:

The discovery of the electron in 1897 by J. J Thomson and the proton in 1917 by Rutherford most directly refuted or replace the idea that the atom resembles plum pudding.

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A chemical bond is a strong attraction between two or more atoms. Can you identify the properties of different types of chemical
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Answer:

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2 years ago
Read 2 more answers
Why are fossils<br> important in the<br> development of the<br> geologic time scale?
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Fossils are fundamental to the geologic time scale. The names of most of the eons and eras end in zoic, because these time intervals are often recognized on the basis of animal life. Rocks formed during the Proterozoic Eon may have fossils of relative simple organisms, such as bacteria, algae, and wormlike animals
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2 years ago
What is the molality of a solution of 10 g NaOH in 500 g water?<br>Molar mass NaOH = 40 g​
umka2103 [35]

Explanation:

Moles of NaOH = 10g / (40g/mol) = 0.25mol.

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The element is Sodium with an atomic number of 11 and electrovalent bonding takes place when it comes near an atom having seven valence electrons.

<h3>What is Electrovalent bonding?</h3>

This is also referred to as ionic bonding and involves the transfer of atoms of an element to another.

In order for both of them to achieve a stable octet configuration, sodium donates one atom to the element seven valence electrons.

Read more about Electrovalent bonding here brainly.com/question/1979431

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