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
Mariulka [41]
3 years ago
15

Identify each statement as true or false. Explain in every case.a.Ionization energies are always negative quantities.b.Oxygen ha

s a larger first ionization energy than F.c.The second ionization energy of an atom is always greater than its first ionization energy.d.The third ionization energy is the energy needed to remove three electrons from a neutral atom.
Chemistry
1 answer:
worty [1.4K]3 years ago
7 0

Answer:

(a) FALSE

(b) FALSE

(c) TRUE

(d) FALSE

Explanation:

Ionization energy refers to the energy needed for removal of a valence electron present in valence shell of a gaseous atom.

(a) <u>The value of ionization energy of an atom is always</u><u> positive</u>. This is because energy has to be always supplied or provided to a gaseous atom for the removal of the valence electron.

<em><u>Therefore, the statement (A) is</u></em><em><u> false</u></em>

   

(b) The ionization energy of an atom <u>increases across a period</u> i.e. from left to right. This is because the <u>effective nuclear charge that is experienced by the valence electron increases</u> from left to right in the periodic table, as the atomic number increases.

So, more energy is required to remove the valence electron of fluorine as compared to oxygen.

<u>Therefore, the </u><u>ionization energy of fluorine is greater than oxygen</u><u>.</u>

<em><u>Therefore, the statement (B) is</u></em><em><u> false</u></em>

(c) <u>First ionization energy</u> is energy needed for removal of first electron present in valence shell of a neutral atom. Whereas, <u>second ionization energy</u> is the energy needed for removal of second electron present in valence shell of a monovalent cation

The second ionization energy of an atom is always greater than the first ionization energy. This is because removing<u> an electron from a positively charged species, requires more energy.</u>

<em><u>Therefore, the statement (C) is</u></em><em><u> true</u></em>

<em><u /></em>

(d) <u>The third ionization energy </u>refers to the energy needed to remove the third electron from a divalent cation.

<em><u>Therefore, the statement (D) is</u></em><em><u> false</u></em>

You might be interested in
Helpp plssssss :)<br> .....
MaRussiya [10]
B is right yuh yuh yuh yuh
4 0
3 years ago
8. What is the molecular formula of a compound if 0.50 moles of it contains 0.50
11Alexandr11 [23.1K]

Answer:

ew

Explanation:

de

3 0
3 years ago
An exothermic reaction is a chemical reaction where heat is
ch4aika [34]
Emitted/given off. exo is a way to remember that is is going away. think of a flame. the heat is emitted off onto you.
3 0
2 years ago
Read 2 more answers
True or False: If you have 2 moles of water and 2 moles of carbon, you have the same number of molecules.
nikklg [1K]
True.
moles x avagadro number = molecules
8 0
3 years ago
Read 2 more answers
Which is a positive effect of the technology advance of going from a compass to a gps
egoroff_w [7]

Answer:

Compass - Gps                              

Explanation:

I belive the pro's                                      and cons are

                                         GPS             you are trusting a little man made device

the direction you                               to give you directions

are going on                                        and that it won't break or die

a device not a paper map

                                                Compass

You can see north east south and              it is usually carefully crafted for                                                                                                                                                                          o                                                                     outdoors but it has no roads and

west on the compass and                          if given no directions, extremely

you can see the roads follow directions                  confusing until you learn it

like go south then east.

4 0
3 years ago
Other questions:
  • Which of the following mountain ranges is the result of a continent-continent orogeny?
    9·1 answer
  • Two samples of calcium fluoride are decomposed into their constituent elements. the first sample produced 0.154 g of calcium and
    5·1 answer
  • What is the Percent yield is 4.65 got copper is produced by 1.87 percent yield is got copper is produced when 1.87 grams of alum
    13·1 answer
  • If the pH of a solution is 3, its pOH is
    6·1 answer
  • Why did the model of the atom change?
    11·1 answer
  • Calculate the volume of an object with dimensions measuring 3.o cm x 4.0 cm x 1.0 cm<br> ?cm^3
    6·1 answer
  • Distringuish between zeotropic and azeotropic mixtures​
    9·2 answers
  • Calculate the Molarity when 14.6 g Ethanol (C2H5OH) is dissolved in a 2.10 L solution.
    12·1 answer
  • Hikers noticed that a sealed bag of potato chips puffs up when taken to the top of a mountain. suppose that at the valley floor
    5·2 answers
  • Moving electrons are found to exhibit properties of.
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!