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
galina1969 [7]
3 years ago
13

Complete the table with the mass number, number of protons, number of neutrons, and number of electrons for the elements shown.

Chemistry
1 answer:
Alex3 years ago
6 0

Answer:

Explanation:

The Proton number for flourine will be 9

Then the mass number which will be protons+ neutrons will be 19

Argon which has a mass number of 40

to find the proton number of argon it will be 40-22=18

then the electron number will just be the same as proton number

then calcium the proton will be the same as electron so it will be 20

then neutrons will be mass number -proton number

which is 21

hope this helped

and pretty cool you use a mac

You might be interested in
How does nickel make stainless steel not magnetic?.
9966 [12]
The nickel, itself ferromagnetic, reduces the magnetism in stainless steel but not to zero. Austenitic stainless steel is defined as the steel crystal structure that is face centered cubic which is the same structure hot iron has as one of the allotropes of iron. Nickel above a certain percentage (18) stabilizes austenite structure just as if you took carbon steel and heated it above 730–770 C. Above this temperature the structure is FCC and above the Currie temperature where magnetism is killed due to the isotopic symmetry of the structure. However, you can still get a small magnetic attraction from austenitic stainless steel if it is cold worked, heat treated a certain way or welded. So it is not a guarantee that austenitic stainless is totally non magnetic.
7 0
3 years ago
8.5C
DENIUS [597]

Answer:

i.e belongs to same group because of valence electrons are same

Explanation:

so it has same chemical behaviour. and q has more energy than r ionisation energy decreases from top to bottom

3 0
4 years ago
_______ is an example for isotone. a)argon and carbon b) uranium and carbon c) carbon and boron d)sulphur and boron.​
slavikrds [6]

Isotones are nuclides that have the same neutron number but a different proton number. Therefore the answer is  C. boron and carbon.

3 0
3 years ago
Read 2 more answers
Compare the molar concentration of the crystal violet solution to that of the sodium hydroxide solution. approximately how much
romanna [79]
The <span>molar concentration of the crystal violet solution is more concentrated than that of the sodium hydroxide solution. It is because the crystal violet solution has more solute in it compared to the sodium hydroxide.</span>
6 0
3 years ago
The isomerization of methylisonitrile to acetonitrileCH3NC(g)→CH3CN(g)is first order in CH3NC . The rate constant for the reacti
lisabon 2012 [21]

Answer:

Option E, Half life = 2.96\times 10^3\ s

Explanation:

For a first order reaction, rate constant and half-life is related as:

            t_{1/2}=\frac{0.693}{k}

Where,

t_{1/2} = Half life

k = Rate constant

Rate constant given = 2.34\times 10^{-4}\ s^{-1}

t_{1/2}=\frac{0.693}{k}

=\frac{0.693}{2.34 \times 10^{-4}}=2.96\times 10^3\ s

So, the correct option is option E.

4 0
4 years ago
Other questions:
  • What is the mass of 0.25 mol of sodium chloride? (show working)
    7·2 answers
  • What is the volume occupied by 2.00 moles of Ar(g) at STP? Another one I am stuck on...please help!
    14·1 answer
  • Explain why the reaction is classified as an addition reaction
    14·1 answer
  • Why does a laser light not produce a spectrum?
    6·1 answer
  • Write an expression that can be used to check the quotient of 646÷3
    15·1 answer
  • Which of the following is not part of Dalton's atomic theory?
    11·2 answers
  • Fill in the blanks. SPELLING COUNTS!!
    7·1 answer
  • Alkaline solutions have pH values below 7.<br><br>true or false ?<br>​
    12·1 answer
  • What type of chemical reaction does this equation represent?<br><br> Ag2S + KCN --&gt; AgCN + K2S
    8·1 answer
  • What is science explain​
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!