1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
77julia77 [94]
3 years ago
10

An ion with six protons, seven neutrons, and a charge of 2+ has an atomic number of ________.

Chemistry
1 answer:
Varvara68 [4.7K]3 years ago
3 0
There are some standard numbers that help us describe the structure of an atom and help us categorize them. Those are the atomic number, the mass number and the numbers of electrons in an atom (or ion). Atoms are electrically neutral, hence they have the same number of protons as electrons. If an atom has a charge and has thus become an ion, it is because electrons joined it or left. For example in this case, since the ion has +2 charge, 2 electrons left it and thus the ion has 4 electrons (2 electrons less than its protons). The mass number is the sum of the protons and neutrons of an atom (that are in the nucleus). In this case, this yields a mass number of 13 for this ion. The atomic number of an atom (or ion) is the total number of protons in the nucleus. Protons do not leave the nucleus except for radioactive reactions and thus the atomic number of an atom (or ion) does not change in chemical reactions. In this case, the ion has an atomic number of 6.
You might be interested in
What is the mass of 0.714 moles of Mercury (I) Chloride (Hg2Cl2)?
ArbitrLikvidat [17]
Data:

m (<span>Sample Mass) = ? 
n (</span><span>Number of moles) = 0.714 mol
MM (Molar Mass) of </span>Mercury (I) Chloride (Hg_{2}  Cl_{2})
Hg = 2*200.59 = 401.18 amu
Cl = 2*35.453 = 70.906 amu
----------------------------------------
Molar Mass Hg_{2} Cl_{2} = 401.18 + 70.906 = 472.086 ≈ 472.09<span> amu or 472.09 g/mol
</span>
Formula:

n =  \frac{m}{MM}

Solving:


n = \frac{m}{MM}
0.714 =  \frac{m}{472.09}
m = 337.07226\:\to\:\boxed{\boxed{m\approx 337 g}} \end{array}}\qquad\quad\checkmark

Answer:
By approximation would be letter D) <span>337.2 g</span>


8 0
3 years ago
Consider the four free body diagrams. Free-body diagrams are diagrams used to show the relative magnitude and direction of all f
9966 [12]
If you look closely at each of the four diagrams you would be able to conclude that

<span>D) 
Yes. In B and D. In both cases, there is a net force. 
In B, there is a net force to the left; in D there is a net force upward.

In A and C, the forces are in equilibrium both in the horizontal and vertical direction.</span>
5 0
3 years ago
Read 2 more answers
Why is it necessary to obtain 25 to 50 hairs from this woman?
Vedmedyk [2.9K]

To get the correct data

5 0
2 years ago
Arrange these steps related to climate change in the correct order.
Eva8 [605]
4, 2, 1, and 3 is the answer
5 0
3 years ago
Read 2 more answers
Is the gravity a black hole strong enough to keep light from escaping True or False
puteri [66]

Answer:

The gravitational pull of a black hole is so strong that nothing, not even light, can escape once it gets too close. ... Moving at close to the speed of light, these particles ricochet off the event horizon and get hurled outward along the black hole's axis of rotation

(True)

4 0
2 years ago
Other questions:
  • Why is it possible to use physical properties to separate a mixture
    13·2 answers
  • Find the Nazca plate and the South American plate. How are they different? Are they moving toward or away from each other?
    6·1 answer
  • In the Arrhenius equation, temperature is directly proportional to which factor
    5·1 answer
  • One different between mixtures and pure substance is that
    10·2 answers
  • If 0.5 ml of a mumps virus vaccine contains 5000 units of antigen, how many units would be present in each milliliter if the 0.5
    12·1 answer
  • Which of the following systems in not directly involved in the body's regulation of water?
    9·1 answer
  • Recall how Newton's investigation of light followed one form of scientific method​
    13·1 answer
  • - Your science class is going to play a game of tug-of-war and you need to divide up the
    15·1 answer
  • The only sure evidence for chemical reaction is
    5·2 answers
  • How many moles of calcium nitrate could be produced from 8.64 moles of calcium hydroxide
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!