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loris [4]
2 years ago
9

Fill in the blanks to determine the number of protons and electrons in an oxygen ion. (consult the periodic table to determine t

he number of protons in a neutral oxygen atom.) the o2− ion has _____ protons and _____ electrons. express your answers as integers separated by a comma.
Chemistry
2 answers:
CaHeK987 [17]2 years ago
8 0

The Oxygen ion (O2-) has 8 protons and 10 electrons

<h2>Further Explanation</h2><h3>An atom  </h3>
  • An atom is defined as the smallest particle of an element that can take part in a chemical reaction.
  • Atoms are made of energy shells and the inner nucleus.
  • It is also made up of subatomic particles, protons and neutrons.
<h3>Neutrons  </h3>
  • They are sub-atomic particles in an atom that are found in the nucleus of an atom.
  • The number of protons and neutrons in a nucleus of an atom results to the atomic mass number of an atom.
<h3>Protons</h3>
  • Protons are subatomic particles that are found in the nucleus of an atom.
  • The number of protons differ from one element to another and thus used as the atomic number of an individual element.
<h3>Electrons  </h3>
  • They are found orbiting the nucleus on energy shells based on Clouds’ theory.
  • The number of electrons and protons in a neutral atom are equal.
  • Electrons are the only sub-atomic particles that take part in chemical reactions.
<h3>Ions </h3>
  • Ions are formed as a result of gaining or loosing of electrons by a atom to attain a stable configuration based on the octet rule.
<h3>Cations </h3>
  • Cations are type of ions that are formed when an atom looses electrons to form a stable configuration. Cations are positively charged.
  • For example, a neutral sodium atom (Na) looses one electron to form sodium ion (Na+) which is a cation.
  • Which means, a neutral sodium atom has 11 electrons and 11 protons while a sodium ion has 10 electrons and 11 protons.
<h3>Anions </h3>
  • Anions are type of ions that are formed when an atom of an element gains electrons. They are negatively charged.
  • For example, a neutral oxygen atom (O) gains two electrons to form oxygen ion (O2-) which is an anion.
  • Therefore, a neutral oxygen atom has 8 electrons and 8 protons while an oxygen ion has 10 electrons and 8 protons.

Keywords: Atom, sub-atomic particles, electrons, protons, neutrons, ions, anions cations

<h3>Learn more about:</h3>
  • Sub-atomic particles: brainly.com/question/5468892
  • Electrons: brainly.com/question/5468892
  • Protons: brainly.com/question/5468892
  • Neutrons: brainly.com/question/5468892

Level: High school

Subject: Chemistry  

Topic: Atomic structure

Sub-topic: Ion formation

saveliy_v [14]2 years ago
5 0
The protons in an nucleus of an atom will not change unless a nuclear reaction takes place. The number of protons is equal to the atomic number of the element. For a neutral atom, the number of electrons and protons are equal. When they are unequal, then the atom occurs as an ion. It will has a net charge with it. The ion O²⁻ has a net charge of negative positive 2 because it has 2 more electrons than its protons. Since neutral oxygen has 8 protons, then O²⁻ ion has 8 protons and 10 electrons.
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What mass of H2 gas (in <br> g. would be produced by the complete reaction of the aluminum block?
loris [4]

First lets calculate the moles of aluminum (molar mass is 27 gram/mol):

n = m/M = 14.9 / 27 = 0.551 mole of Al


According to the reaction between sulfuric acid and aluminum:

From 2 moles of aluminum ==> we get 3 moles of Hydrogen gas

so, let's do cross multiplication

0.551 ==> 0.551 * 3/2 = 0.83 mole of H2


So, from this reaction we got 0.83 mole of H2 gas

knowing that the molar mass of H2 is 2 gram/mol, the mass of the gas is.

m = n * M = 0.83 * 2 = 1.66 gram of H2


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Answer:

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Sr(s) + C(s) + 3/2 O₂(g) → SrCO₃(s)

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