An atom is determined to contain 12 protons, 10 electrons, and 12 neutrons. What are the mass number and charge of this atom or ion? Select one:
a. mass number: 24, charge: +2
b. mass number: 22, charge: neutral
c. mass number: 34, charge: -2
d. mass number: 34, charge: +2
Answers
The mass mass number is 22 and the charge of the atom is +2. The correct answer is option A
How to determine the mass number and charge?
1. The mass number of the atom can be obtained as follow:
- Number of protons = 12
- Number of neutrons = 12
- Mass number =?
Mass number = number of proton + number of neutron
= 12 + 12
= 24
2. The charge of the atom can be obtained as follow:
- Number of protons = 12
- Number of electrons = 10
- Charge =?
Charge = number of protons - number of electrons
= 12 - 10
= +2
Thus, the mass number is 24 and the charge is +2. The correct answer to the question is option A
Learn more about mass number:
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A=Z+N
Z=number of protons=12
N=12
A=12+12=24
If, we have 12 protons and 10 electrons, the charge of this ion is +2
Therefore: mass number:24; charge: +2
Answer: a. mass number: 24; charge: +2
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Isotopes of an element have nuclei with the same number of protons and the same number of neutrons.
Isotopes of an element have nuclei with a different number of protons, but the same number of neutrons.
Isotopes of an element have nuclei with a different number of protons, but the same number of electrons.
Answers
Answer:isotopes of an element has same number of proton but different number of neutron.
Explanation:
Isotope: The atoms of element having same atomic number but different mass number are called isotope.
Hydrogen has three isotopes called as
1.protium
2.duetrium
3.tritium
All of the isotopes of hydrogen have same atomic number but different masses 1,2,3 respectively.
Isotopes have same outermost shells there for having same chemical properties.
Isotopes have different nuclie due which they have different physical properties.
Tritium the 3rd isotop having diffrent prton to neutron ration emitts radiation there it in traces.
Answer: its neutrons
your welcome
Answers
Answer:
1: C
2: a
3: B
4: D
hope this helps
lease company
b. At the end of a loan, the car still belongs to the lease company, but at the end of a lease the car
belongs to you.
c. A loan requires a large down payment at the beginning while a lease does not.
d. A lease requires a large down payment at the beginning while a loan does not.
Please select the best answer from the choices provided
Answers
Answer:
letter A is the answer
Explanation:
At the end of a loan the car belongs to you, but at the end of a lease, the car still belongs to the lease company.
Answers
Answer:
Answers
Answer:
Every homogeneous mixture is uniform in nature.
Explanation:
One of the most interesting facts about homogeneous mixtures is that, in a sense, there's no real distinction. The mixture is uniform in nature.
Conversely, at a large enough scale everything in the universe is homogeneous, because it becomes impossible to differentiate components.
Each part of the mixture has the same appearance would be a property of a homogeneous mixture. A homogeneous mixture has a uniform composition and every part of the solution has the same properties.
Hope this helps :D
Answers
The list which includes elements with the most similar chemical properties is; Choice 3: O, S, Se
First, we must know:
Elements are arranged in 7 Periods and 18 groups in the periodic table.
Additionally, Elements in the same group of the periodic table often have similar chemical characteristics as a result of equal number of Valence electrons.
By considering Choices individually;
For Choice 1: (Br, Ga and Hg)
- Bromine is a member of Group 17, Gallium is a member of Group 13 and Mercury is a member of Group 12.
- Bromine is a member of Group 17, Gallium is a member of Group 13 and Mercury is a member of Group 12.All three elements belong to different groups. In essence, they do not show similar chemical properties.
For Choice 2: (Cr, Pb and Xe)
- The elements belong to different groups of the periodic table and consequently, they do not show similar chemical properties.
For Choice 3: (O, S and Se)
- Oxygen, Sulfur and Selenium are all members of Group 16(6)
- Since, all three elements belong to same group. In essence, they will show similar chemical properties.
For choice 4: (N, O and F)
- The elements belong to different groups of the periodic table and consequently, they do not show similar chemical properties.
Ultimately, the correct answer is Choice 3.
Read more:
Answer: The correct answer is Option 3.
Explanation:
Elements are distributed in 7 Periods and 18 groups in a periodic table.
Elements which belong to same group show similar chemical properties because of the same number of valence electrons.
For the given options:
Option 1: Br, Ga and Hg
Bromine is present in Group 17, Gallium is present in 13 and Mercury is present in Group 12.
As, all the three elements belong to different groups. So, they do not show similar chemical properties.
- Option 2: Cr, Pb and Xe
Chromium is present in Group 6, Lead is present in Group 14 and Xenon is present in Group 18.
As, all the three elements belong to different groups. So, they do not show similar chemical properties.
- Option 3: O, S and Se
Oxygen, Sulfur and Selenium are present in Group 16.
As, all the three elements belong to same group. So, they will show similar chemical properties.
- Option 4: N, O and F
Nitrogen is present in Group 15, Oxygen is present in Group 16 and Fluorine is preset in Group 17.
As, all the three elements belong to different groups. So, they do not show similar chemical properties.
Hence, the correct answer is Option 3.