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faust18 [17]
3 years ago
10

Given an atom of Mercury (Hg) which has an atomic number of 80 and an atomic mass of 200, what is the total number of particles

in the nucleus?
Chemistry
2 answers:
rewona [7]3 years ago
7 0
280 is the total number
yuradex [85]3 years ago
3 0
In order to determine the number of protons, neutrons and electrons that are in an atom, the first thing you need to do is find the atomic number and the atomic mass of the element you are interested in. You can use the Periodic Table of Elements to find this information. Let's use mercury as an example:
From the Table of Elements, we can see that mercury's atomic number is 80 and its atomic mass is 200.59. We'll need these numbers to get the information you want. The atomic number is the number of protons in an atom's nucleus, so we can tell right away that an atom of mercury contains 80 protons. Atoms, by definition, are electrically neutral. Protons carry a positive charge, so the nucleus of an atom of mercury carries a charge of +80. This positive charge is balanced by electrons, which carry a negative charge. 80 electrons are needed to balance the 80 protons. The atomic mass is sort of an average of all of the different isotopes of an element. Mercury's atomic mass is 200.59, but we can round that to 201 (this is known as the mass number). This is a tally of the total number of particles in an atom's nucleus, so an 'average' atom of mercury contains 201 particles in its nucleus. We know that 80 of those particles are protons. The rest must be neutrons. So, an atom of mercury contains 201 - 80 = 121 neutrons. In summary
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6 0
3 years ago
Which noble gas will Selenium try to resemble when it becomes an ION?
lapo4ka [179]

Answer:

Krypton

Explanation:

When Selenium forms an ion, it is trying to become krypton which is a noble gas.

Selenium belongs to the oxygen group on the periodic table. In this group, the atoms prefers to gain two electrons to complete their octet. When selenium gains two electrons, its octet is complete.

This will make the atom resemble krypton on the periodic table of elements.

This structure which is an octet confers a special stability on the element.

7 0
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Which antibody does the body release when it identifies a bacterium or virus?
dlinn [17]

Explanation:

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Therefore, it is concluded that when the body identifies a bacterium or a virus, it releases the antibody IgM.

6 0
3 years ago
Read 2 more answers
Rank the following aqueous solutions from highest to lowest freezing point: 0.1 m FeCl3, 0.30 m glucose (C6H12O6), 0.15 m CaCl2.
Tresset [83]

Answer:

Explanation: See images below for explanation

8 0
3 years ago
select from this list the one metal or alloy that is best suited for each of the following applications, and cite at least one r
Brut [27]

<em>List of metal or alloy that is best-suited include :</em>

<em>1) Block of an </em><em>internal combustion </em><em>engine is made of grey cast </em><em>iron </em><em>because it is </em><em>ductile </em><em>and hard enough to bear the loads.</em>

<em>2) Steam heat exchanger is made up of </em><em>stainless steel </em><em>material as it has high resistance to </em><em>corrosion </em><em>and has the capacity to bear high-</em><em>temperature </em><em>differences.</em>

<em>3) For jet engine </em><em>turbofan blades</em><em>, titanium alloys are being used because they can able to bear high pressure and high energy loads.</em>

<em>4) Tool </em><em>steel </em><em>is used to make drill bit material as it has high </em><em>tensile </em><em>and point strength.</em>

<em>5) </em><em>Aluminum alloys </em><em>are used for </em><em>cryogenic </em><em>applications as it is the best suited for work at low </em><em>temperatures</em><em>.</em>

<em>6) </em><em>Magnesium </em><em>is used for </em><em>pyrotechnics </em><em>as it gives works on the effect of heat, </em><em>light</em><em>, and gas. </em>

<em />

<em />

Alloy, a metallic substance composed of two or more elements, as both a compound or a solution. The components of alloys are ordinarily themselves metals, though carbon, a nonmetal, is an essential constituent of metal.

Alloys, in trendy, are more potent and harder, less malleable, much less ductile, and greater corrosion-resistant than the alloy's predominant metallic.

An alloy is created with the aid of mixing metallic with another issue, both any other metal or a nonmetal substance. Metallic alloys are commonly made by means of melting the substances, mixing them collectively, after which letting them cool to room temperature, ensuing in a strong material.

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Learn more about Alloy here:-brainly.com/question/1759694

#SPJ4

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3 0
1 year ago
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