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
Sphinxa [80]
3 years ago
8

Imagine you are given a mystery element. It is , however a discovered and known element . You may perform a maximum of two obser

vations or tests to determine its identity. Time and money is critical. Getting by with a single test is preferable. Pick your two tests , number them as 1 and 2 and justify why you think these two will certainly be enough ( and why the first could be enough by itself).
The available tests are classification into metal , not metal , or metalliod, count of valence electrons , count of electron shells , atomic radius , electronegativity , first ionization energy , melting point , and boiling point
Chemistry
1 answer:
frutty [35]3 years ago
4 0
I would choose count of electron shells and count of valence electrons. The electron configuration of each element is fixed and can be used to determine the element's identity. By counting the electron shells, you can have an idea which part of the periodic table the mystery element lies, and by determining the number of valence electrons (outermost shell), you can pinpoint the exact identity of the mystery element.
You might be interested in
Cells which form pathways to and from the brain are <br> .epiltheilal neurons connnective
nikdorinn [45]

Answer:

<u><em>neurons</em></u>

Explanation:

The long-axoned cells, called principal neurons, transmit information over long distances from one brain region to another (Sheperd,1979). Principal neurons provide the pathways of communication within the nervous system.

3 0
2 years ago
Read 2 more answers
In which orbital does an electron in a bromine atom experience the greatest effective nuclear charge?
asambeis [7]

First let us determine the electronic configuration of Bromine (Br). This is written as:

Br = [Ar] 3d10 4s2 4p5

 

Then we must recall that the greatest effective nuclear charge (also referred to as shielding) greatly increases as distance of the orbital to the nucleus also increases. So therefore the electron in the farthest shell will experience the greatest nuclear charge hence the answer is:

<span>4p orbital</span>

4 0
3 years ago
Read 2 more answers
Why methylated spirits burn?​
pishuonlain [190]

Answer:

Methylated \:  spirits \:  are \:   \: extremely \:  flammable.

Explanation:

Incorrect use has resulted in accidents and disfiguring burns. Never leave a methylated spirit appliance unattended. Also make sure that the camping stove or appliance is on a flat surface and that the fuel cannot spill out.

5 0
2 years ago
if one person can clean a house in 5 hours and the second person can clean the same house in 4 hours, how long would will it tak
Anettt [7]
1/5 + 1/4 =1/x

4x + 5x = 20

9x = 20 

x = 2.22 hours  Answer
3 0
3 years ago
What is radiation exactly
serious [3.7K]

radiation is energy that comes from a source. (travels through the speed of light)

6 0
3 years ago
Read 2 more answers
Other questions:
  • Which element’s atomic number is the same as its atomic weight?
    12·1 answer
  • Refer to the first three rows of the periodic table, what element has properties most similar to carbon?
    9·1 answer
  • A ____________ is a physical combination of things that can be separated. mixture compound
    8·1 answer
  • What happens if a solid changes the state of substance to liquid?
    14·2 answers
  • Jewelry is commonly weighed in carats. five carats are equivalent to one gram. how many grams of gold are contained in a 24-cara
    13·1 answer
  • Please help! I really need help on this!​
    7·1 answer
  • Please tell me witch one goes with what. It can be continental drift or plate tectonics. please tell me if you need help
    15·2 answers
  • What is the mass in grams of 5.50 mol of sodium?
    11·1 answer
  • Culinary arts HELP FAST 1. Most people don't often think about science and restaurants or the food industry as
    8·1 answer
  • A sample of oxygen, o2, occupies a volume of 0. 65 l at 11°c under 0. 50 atm of pressure. (r = 0. 08205 latm/molk). how many mol
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!