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
lakkis [162]
3 years ago
14

Why did it require two sodium atoms to complete the Na2O formula unit? Na has +2 charge and O has -1 charge. Na has +1 charge an

d O has -2 charge. Na has -2 charge and O has +1 charge.
Chemistry
2 answers:
Darya [45]3 years ago
7 0

Answer:

B

Explanation:

Edg2020

Artyom0805 [142]3 years ago
5 0
Na₂O is an ionic compound. Na is in group 1 which means it has one electron in the outer shell. O is in group 6 so it has 6 electrons in the outer shell.
To become stable atoms need to either lose the electrons in the outer shell or gain electrons to gain a complete outer shell configuration. 
To become stable Na loses its outer electron and becomes positively charged. It only loses one electron, so net charge is +1. O to become stable gains 2 electrons to complete its outer shell and becomes negatively charged. since it gains 2 electrons, the net charge is -2. 
cation - Na⁺
anion - O²⁻
O gains 2 electrons but Na can give only one electron, therefore 2 Na⁺ ions are required. 
the compound can be written by exchanging the charges
  ions         Na⁺       O²⁻
charge       +1       -2
exchange   Na₂O
Correct answer is <span>Na has +1 charge and O has -2 charge</span>
You might be interested in
Explain the relationship between an individual and a Society​
Rufina [12.5K]

Answer:

the relationship between an individual and a society is society doesn't exist independently without an individual .the individual lives and acts within society but society is nothing ,in spite of the combination of individual s for cooperation effort.

6 0
3 years ago
Use the following table to answer the question. Strong acids Weak acids Weak bases Strong bases HBr CH3COOH NH3 NaOH HCl HF NH4O
Y_Kistochka [10]

Answer: The salt which has the highest pH is CH_3COONa

Explanation: Salts are formed by the reaction of acid and base. General equation for the generation of salt is given by:

HX+BOH\rightarrow BX+H_2O

The given salts are formed from the reaction of acids and bases.

1) K_2SO_4

This is a salt formed by the reaction of strong base (KOH) and strong acid (H_2SO_4) . So, this salt is a neutral salt.

H_2SO_4+2KOH\rightarrow K_2SO_4+2H_2O

2) CuSO_4

This is a salt which is formed by the reaction of weak base (Cu(OH)_2) and strong acid (H_2SO_4). So, this salt is an acidic salt.

H_2SO_4+Cu(OH)_2\rightarrow CuSO_4+2H_2O

3) NH_4Cl

This is a salt which is formed by the reaction of weak base (NH_3) and strong acid (HCl). So, this salt is an acidic salt.

HCl+NH_3\rightarrow NH_4Cl

4) CH_3COONa

This is a salt which is formed by the reaction of  strong base (NaOH) and weak acid (CH_3COOH). So, this salt is a basic salt.

CH_3COOH+NaOH\rightarrow CH_3COONa+H_2O

Now, we have to find the salt which has the highest pH value.

Highest pH value means that the salt must be basic in nature and from the given salts, only CH_3COONa is basic salt. Hence, this salt has the highest pH value.

6 0
3 years ago
Read 2 more answers
A kinetics experiment is set up is set up to collect the gas that is generated when a sample of chalk consisting primarily of so
inn [45]

Answer:

Correct option -D

Explanation:

Here, A kinetics experiment is set up is set up to collect the gas that is generated from the cacarbonate and methanoic acid.

Among the given conditions, decreasing the particle size of calcium carbonate only increases the production of gas.

Smaller particles of reactant increases the surface area then followed by rate of reaction will be increases it leads to increases the production of gas.

Therefore, the suitable experimental condition most likely to increase the gas production is-

Decreasing the particle size of the CaCO_{3} by grinding it into a fine powder.

Hence, correct option -D.

4 0
3 years ago
7. How many simple sugars are in each of the following?
Dmitrij [34]

Answer:1 2and 3

Explanation:

Saccharide consist of simple sugars of triose

7 0
3 years ago
Read 2 more answers
Reduction is reaction which results in a _______ in electrons and a(n) ________ in positive charge of the atom of ion.
Arlecino [84]
1) gain
(just remember this OIL-Oxidation Is Loss and RIG-Reduction Is Gain)

2) decrease
7 0
3 years ago
Read 2 more answers
Other questions:
  • Which aqueous solution has the highest boiling point?
    12·1 answer
  • What are the relative ion concentrations in an acid solution?
    12·1 answer
  • Group VIII corresponds to the...
    14·1 answer
  • Suppose that 3.74 ml of carbon dioxide (C02) accidentally escaped during the experiment, what volume in liters would that be
    15·1 answer
  • Calculate the density in g/l of co2 gas at 27 Celsius and 0.500 atm pressure
    11·1 answer
  • A swimming-pool worker wants the pool's pH to be 7.2. She comes by to test the water and finds that the pH is 9.2. What should s
    5·2 answers
  • Why are methanol and acetone not suitable solvents for extracting organic compounds from aqueous solutions?
    9·1 answer
  • N-hexane boils at 68.7 oC at 1.013 bar and the heat of Vaporization is 28850
    11·1 answer
  • Explanation about the combining powers of element chemistry
    14·1 answer
  • Which words help you to determine the meaning of the word declerate in paragraph 3 ?
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!