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Virty [35]
3 years ago
15

Additional energy is required to move second and successive electrons from an ion. Which element could have the following series

of ionization energies (IE)? IE1 = 738 kJ/mol; IE2 = 1450 kJ/mol; IE3 = 7730 kJ/mol; IE4 = 10545 kJ/mol; IE6 = 17995 kJ/mol
Chemistry
1 answer:
Svetach [21]3 years ago
5 0

Answer:

Magnesium (Mg)

Explanation:

Ionization energy is the energy required to remove an electron from a gaseous atom or ion.

The first or initial ionization energy of an atomis the energy required to remove one mole of electrons from one mole of isolated gaseous atoms or ions.

The second ionization energy is the amount of energy required to remove the second valence electron.

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Do you know the answer if so pls answer
igomit [66]

Answer:

They are both pretty soft for metals, but magnesium is significantly harder than calcium using this scale . Mg = 2.5, Ca = 1.75. The larger the number, the harder

Explanation:

6 0
3 years ago
If i have 340mL of a 1.5 M NaBr solution, What will the concentration be for 1000mL?
Gekata [30.6K]

Answer:

0.51M

Explanation:

Given parameters:

Initial volume of NaBr = 340mL

Initial molarity  = 1.5M

Final volume  = 1000mL

Unknown:

Final molarity = ?

Solution;

This is a dilution problem whereas the concentration of a compound changes from one to another.

In this kind of problem, we must establish that the number of moles still remains the same.

    number of moles initially before diluting = number of moles after dilution

Number of moles  = Molarity x volume

Let us find the number of moles;

          Number of moles  = initial volume x initial molarity

Convert mL to dm³;

                  1000mL  = 1dm³

                     340mL gives \frac{340}{1000}   = 0.34dm³

Number of moles  = initial volume x initial molarity  = 0.34 x 1.5 = 0.51moles

Now to find the new molarity/concentration;

               Final molarity  = \frac{number of moles}{Volume}    = \frac{0.51}{1}    = 0.51M

We can see a massive drop in molarity this is due to dilution of the initial concentration.

6 0
4 years ago
What is the electron structure of a sodium atom?
nordsb [41]

Answer:

1s22s22p63s1 is the electronic configuration of sodium.

Explanation:

7 0
4 years ago
Read 2 more answers
Which of the following cannotbe considered a single phase? a heterogeneous mixture a pure solid a homogeneous mixture a pure liq
MrRa [10]
A heterogeneous mixture cannot be considered a single phase
4 0
3 years ago
Based on the number of valence electrons indicated by its location in the periodic table, which element's behavior would you pre
katrin [286]

Answer:

D

Explanation:

Elements in the same group (vertical columns) have the same number of valence electrons. These elements behave similarly because they will either give up or take the same number of electrons to fill their valence shell. Since potassium has 1 valence electron, it will most likely give up one electron. Out of all of the answer options, the only element that is in the same group as potassium is francium.

8 0
4 years ago
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