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
antiseptic1488 [7]
3 years ago
14

Which statements about the structure of the periodic table are true?

Chemistry
1 answer:
DiKsa [7]3 years ago
3 0

Answer:

The distribution of electrons in energy levels is responsible for the shape of the periodic table.

Explanation:

Henry Moseley in the 1900s re-stated the periodic law by changing the basis of the table to reflect more on the atomic number. The present law is therefore "the properties of elements are a periodic function of their atomic numbers".

Atomic number is the number of electrons in an atom and it is the same as the number of protons for neutral atoms.

In the table, elements having the same number of electrons in the outermost shell of their atoms are placed over one another in vertical columns. Each of the vertical column is known as a group or family while each of the resulting horizontal rows is known as period or row.

You might be interested in
Is the sweetened iced tea an electrolyte mixture?
Arada [10]

Answer:

Yes it is

Explanation:

3 0
2 years ago
Read 2 more answers
What color would litmus paper turn in a solution of baking soda? Explain your answer in terms of pH.
madam [21]
Blue

When red litmus paper comes into contact with any alkaline substance, it turns blue. Some examples of alkaline substances are ammonia gas, milk of magnesia, baking soda and limewater.
3 0
2 years ago
8.Which of the following is a base?
RSB [31]

Answer:

Explanation:

Unit 10 - Acid/Base ... (a) Mg(OH. 2. ) (b) Mg(OH). 2. (c) Mg. 2. OH. (d) MgOH. 2. Standard: ... balanced equation for these neutralization reactions: 3. HCl + NaOH → ... H2CO3 + Ca(OH)2 → ... C5.7B Predict products of an acid-base neutralization. 8. 2 NH4OH + H2S ...An Arrhenius base is a compound that increases the OH − ion concentration in ... and a base is called a neutralization reaction and can be represented as follows: ... chemical equation for the neutralization reaction between HCl and Mg(OH) 2. ... acid, an Arrhenius base, or neither. a) NaOH. b) C 2H 5OH. c) H 3PO 4. 6

4 0
3 years ago
What are two objects from home that have energy and how do I know they have energy?
IRINA_888 [86]
Light bulb -it produces heat and light
toaster - it produces heat and the metal strips glow producing light
7 0
3 years ago
(WILL MARK BRAINLIEST)<br> PLZ HELP ASAP
ArbitrLikvidat [17]

Answer:

a) 2NaOH(aq) + CuSO4(aq) -------------> Cu(OH)2(s) + Na2SO4(aq)

b) Ca(OH)2(aq) + CO2(g) --------------> CaCO3 + H2O (this is already balanced)

c) Pb(NO3)2 + H2SO4 --------> PbSO4 + 2HNO3.

d) 2KNO3 ------> 2KNO2 + O2

e) H2SO4 + 2(NaOH) -----> Na2SO4 + 2(H2O)

f) Ca(NO3)2(aq) + (NH4)2CO3(aq) ----------------> CaCO3(s) + 2NH4NO3(aq)

3 0
3 years ago
Read 2 more answers
Other questions:
  • What is the molar mass of Fe(NO3)3
    5·1 answer
  • Which of the following statements is true? Question 5 options: Chemical reaction rates vary with the conditions of the reaction,
    14·1 answer
  • What do you expect from a hurricane?
    5·2 answers
  • What's the smallest celestial body
    11·1 answer
  • A cation forms when an atom gains one or more electrons. True False
    7·2 answers
  • You have 20 g of a buckyball (C20) .
    7·1 answer
  • Bună ziua, mă poate ajuta și pe mine cineva, spunândumi din ce substanțe este formată cărămida și care este formula
    10·1 answer
  • Help me out please. please
    9·2 answers
  • Which process is shown in the diagram?
    13·1 answer
  • The largest mass of silver chloride precipitated is when excess silver ions are added to
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!