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notka56 [123]
3 years ago
6

Electron transfer is the term for this process. The resulting anion and cation are attracted by Coulombic forces and an ionic co

mpound is formed. Ionic compounds are neutral: the number of electrons lost in forming the cation(s) must equal the number gained in forming the anion(s). For example, Aluminum (Al, Z = 13, Group 3A or 13) will lose 3 electrons to become Al3+ which is isoelectronic with Neon (Ne), its closest noble gas. To form an ionic compound those 3 electrons must be picked up by a nonmetal. Two possibilities are:
Nitrogen (N, Z = 7, Group 5A or 15) gains all 3 electrons to become isoelectronic with Neon (Z = 10). The compound formed is AlN

3 Chlorine atoms (Cl, Z = 17, Group 7A or 17) each gain 1 electron to become isoelectronic with Argon (Ar, Z = 18). The symbol for the compound formed is AlCl3. The subscript after Cl indicates that 3 Cl- anions are required.

(1 pt) Form an ionic compound with sodium (Na):

Its atomic number is:

How many electrons must it lose to have the same number of electrons as its nearest noble gas?

Write the symbol for the ion:

Which nonmetal atom needs to gain that same number of electrons to have the same number of electrons as its nearest noble gas?

Write the symbol for the compound formed:

(1 pt) Form an ionic compound with calcium (Ca):

Its atomic number is:

How many electrons must it lose to have the same number of electrons as its nearest noble gas?

Write the symbol for the ion:

Which nonmetal atom needs to gain that same number of electrons to have the same number of electrons as its nearest noble gas?

Write the symbol for the compound formed:
Chemistry
1 answer:
Nitella [24]3 years ago
8 0
<h2>The compound formed is NaCl and CaCl_{2}</h2>

Explanation:

     PART 1:

  • Atomic number of sodium is 11.
  • Sodium(Na, Z = 11, Group 1A) will lose 1 electron to become Na^{1+} which is isoelectronic to Neon (Ne ,Z = 10).
  • The symbol for the sodium ion is Na^{+}.
  • Chlorine atom (Cl, Z = 17, Group 7A or 17) gains 1 elecron to be  isoelectronic to neon.
  • The symbol for the compound formed is NaCl.
  • PART 2:
  • Atomic number of calcium is 20
  • Calcium(Ca, Z = 20 ,Group 2A) will lose two electrons to become Ca^{2+}which is isoelectronic to argon.
  • The symbol for the ion is Ca^{2+}.
  • Two chlorine atoms (Cl, Z = 17, Group 7A or 17) each gains one electron to be isoelectronic to argon(Z = 18)
  • The symbol for the compound formed is CaCl_{2}.
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Four properties of water are listed. It reacts with halogens to form oxygen gas as one of the products. It is transparent and ta
Bezzdna [24]

Chemical property is the property of the substances that describes the ability of the substance to involve in chemical reactions. Physical property is that which does not change the chemical composition of the substances. The following properties of water that it is transparent and tasteless in its pure form and it freezes at a temperature of 0^{0}C are physical properties as they simply indicate the change in physical state without any change in chemical composition of water.

The other two properties that water reacts with halogens to form oxygen gas as one of the products and water decomposes to form hydrogen and oxygen are chemical properties as the chemical composition of water changes in the given reaction.

Therefore the correct answer is b. 1 and 4

8 0
3 years ago
Which button is a shortcut for scientific notation on<br> a scientific calculator?
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Answer: For many calculators, including the TI –83 and TI 83 Plus, the [EE] button is used to enter scientific notation. The [EE] button can be found in yellow above the comma key [,].

8 0
2 years ago
Given: C + O2 → CO2 Bond Bond Energy (kJ/mol) C=O 799 O=O 494 Calculate the enthalpy change for the chemical reaction. The chang
aliya0001 [1]

Answer:

-1104 kJ/mol

Explanation:

The change in the enthalpy of a reaction is equal to the difference between: the sum of the enthalpy changes of the bonds broken and the sum of the enthalpy changes of the bonds formed.

The bonds broken correspond to the cleavage of bonds of the reactants, the bonds formed correspond to the bonds of the products:

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Therefore, the enthalpy change is calculated by:

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3 0
2 years ago
I'll observing and Elodea Plant cell through a microscope a student noticed some small moving green desk. These organelles most
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Answer:

photosynthesis.

The green disks in Elodea plant cell under a microscope represent specialized plant cell organelles, known as chloroplasts. Chloroplasts are double-membrane bound cell organelles that contain green pigments or chlorophyll molecules.

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8 0
3 years ago
[07.02]what is the concentration of a ca(oh)2 solution if 10.0 ml of 0.600 m h3po4 solution is required to completely neutralize
Mademuasel [1]
In neutralization process or titration process, we use the formula;
(M1V1)H3PO4 = M2V2(Ca(OH)2)
M1 = 0.600 m
V1 = 10.0ml
M2 = unknown
V2 = 12.5ml
M1V1 = M2V2
0.6*10 = 12.5*M2
M2 = (0.6*10)/12.5 = 0.48m
Therefore, the answer is 0.480m
3 0
2 years ago
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