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
umka21 [38]
3 years ago
5

How to find the valence electrons on a periodic table + energy levels?

Chemistry
1 answer:
Zigmanuir [339]3 years ago
3 0
The answer is elements in the first row (hydrogen and helium) will have outer electrons in the first energy level. Their principal quantum number is 1. Elements in the second row (lithium through neon) will have valence electrons in the second energy level with a principal quantum number of 2. I hope that helps.
You might be interested in
During a medical screening, lung capacity testing is a standard procedure.<br> true or false
Naya [18.7K]

Answer;

-The above statement is true.

During a medical screening, lung capacity testing is a standard procedure

Explanation;

-Lung capacity testing also the pulmonary function test is a part of medical screening that is done to diagnose certain types of lung disease, such as asthma, bronchitis, and emphysema. Find the cause of shortness of breath and also measure whether exposure to chemicals at work affects lung function.

6 0
3 years ago
Read 2 more answers
What is the Sequence the different segments of the visible spectrum in order from shortest wavelength to
omeli [17]

Answer:The electromagnetic spectrum includes, from longest wavelength to shortest: radio waves, microwaves, infrared, optical, ultraviolet, X-rays, and gamma-rays.

Explanation:

5 0
2 years ago
Help me for number 5 and 6 quickly
blsea [12.9K]
Idk I think its a major addation Or Reading Or Socail Studies Sorry tho

5 0
3 years ago
A combustion reaction occurs between one molecule of methane (CH4) and two molecules of oxygen (O,)
faltersainse [42]

Answer:

D

Explanation:

Because I carbon atom and 1 hydrogen atom plus 2

Oxygen atoms are needed

8 0
2 years ago
Which formula shows a correct representation of the combined gas law?(1 point)
Svetlanka [38]

The formula that shows the correct representation of the combined gas law is; V1P1 / T1=V2P2 / T2

The combined gas law is obtained from the statements of Charles law and Boyle's law as follows;

Charles law; V/T = k

Boyle's law = PV = k

Combining the two I have; PV/T = k

For two masses of an ideal gas;

V1P1 / T1=V2P2 / T2

This is the statement of the combined gas law.

Learn more: brainly.com/question/1190311

3 0
2 years ago
Other questions:
  • A yield of NH3 of approximately 98% can be obtained at 200°C and 1,000 atmospheres of pressure.
    12·1 answer
  • An atom has no overall charg if it contains equal number of
    10·2 answers
  • What is the molar mass of nitrogen?
    12·1 answer
  • The number of unique open-chain structures corresponding to the molecular formula c3h5cl is:
    12·1 answer
  • Why nucleus of an atom is negatively charged?​
    15·1 answer
  • Why might adding inorganic phosphate to a reaction mixture where glycolysis is rapidly proceeding help sustain the metabolic pat
    15·1 answer
  • Which of the following are observations?
    7·1 answer
  • Which conditions suggest that a bond will be ionic
    9·2 answers
  • The bond angles increase steadily in the series PF3, PCl3, PBr3, and PI3. Using the concepts that you have learned in chapters 7
    11·1 answer
  • PLEASE HELP ME !
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!