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
Genrish500 [490]
3 years ago
9

Which element has exactly five electrons in the highest principal energy level (the outer shell)?

Chemistry
1 answer:
kap26 [50]3 years ago
4 0
Boron (B) has 3 electrons in the outer shell.
Barium (Ba) has 2 electrons.
Phosphorus (P) has 5 electrons.
Manganese (Mn) has 2 electrons.

The answer is C) P (phosphorus).
You might be interested in
While finding the number of molecules of oxygen molecules present in 3.65 moles of Na2SO4 the conversion factor used would be
zvonat [6]

Answer

Avogadro's number: One mole of any substance contains 6.022×10²³ molecules

Explanation

While finding the number of moles of oxygen molecules present in 3.65 moles of Na2SO4 the conversion factor used would be Avodagro's number, which is

One mole of any substance contains 6.022×10²³ molecules.

8 0
1 year ago
what is the correct definition of refraction? 1. A change in the direction of light when it goes from one medium into a differen
serious [3.7K]

im pretty sute the answer would be number 4.

mark brainliest  :)

5 0
3 years ago
Read 2 more answers
An atom that has 13 protons and 15 neutrons is isotope of the element A.) nickel B.) silicon C.) aluminum D.) phosphorus. Why?
joja [24]

An atom that has 13  protons and 15  neutrons  is isotope  of Aluminium (answer C)

<u><em>Explanation</em></u>

  • Isotope  is a form of the same element with   the equal number of protons but difference number  of neutrons  in  their nuclei.
  • In other words isotope has the same  atomic number but different mass  number.
  • Atomic  number of a element is determined by number of  protons of an element.

  • from the  periodic table   Aluminum in atomic number 13 therefore  it has 13 protons  <em>therefore an atom that  has 13  protons and 15 neutrons is   a isotope  of Aluminium. </em>
6 0
3 years ago
Read 2 more answers
Is a chemical reaction when put salt into fizzy drinks and why
fomenos
Um to my best knowledge I believe  it is the carbonated water 

7 0
3 years ago
Read 2 more answers
What volume (in milliliters) of oxygen gas is required to react with 4.03 g of Mg at STP
Dvinal [7]
Vol.250 before its to much pressure

7 0
3 years ago
Read 2 more answers
Other questions:
  • Is this any better??
    12·1 answer
  • In the sun, two hydrogen nuclides react together to make an atom of helium. the process releases energy. which type of reaction
    7·2 answers
  • Suppose your thermometer is off by 1.5 oc i.e. it reads values that are 1.5 oc higher. how would this affect the results in this
    10·1 answer
  • Draw all possible structures for a compound with molecular formula C4H8O that exhibits a broad signal between 3200 and 3600 cm-1
    10·1 answer
  • A company is testing drinking water and wants to ensure that ca content is below 155 ppm. What is the maximum amount of Ca that
    14·1 answer
  • The system brings molecules to the cells. It includes blood vessels and the heart.
    11·1 answer
  • sound travels 1,500 m/s through water at 25 degrees celciesunder these conditions how long would it take to travel 300m
    7·1 answer
  • Very urgent
    13·1 answer
  • The density of lithium is 0. 546 g/cm3. what volume is occupied by 3. 66 x 10 23 atoms of lithium?
    11·1 answer
  • What is the specific heat of a substance if 1500 J are required to raise the temperature of a 300.0 g sample from 25°C to 40°C?
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!