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
Nina [5.8K]
3 years ago
5

Why are hydrogen, lithium, and sodium classified as reactive elements?

Chemistry
1 answer:
Sergeu [11.5K]3 years ago
4 0
<span>The alkali metals and hydrogen are reactive because they have only one electron to give in order to complete their valence shell. It is easier to give that one electron so when given the opportunity they will. This means they will react with anything polar or willing to take an electron.</span>
You might be interested in
PLEASE HELP ME QUICK
Mama L [17]

Answer:

b. decreases

C. neither a physical change nor a chemical change

light work

6 0
3 years ago
Spread Spectrum (SS) encoding: a) Name four spread spectrum techniques. b) Which one of them was originally devised against eave
azamat

Explanation:

( a )

<u>The four types of  spread spectrum techniques are as follows -</u>

1. Direct sequence spread spectrum .

2. frequency hopping spread spectrum .

3. chirp spread spectrum .

4. time hopping spread spectrum .

( b )

<u>The Direct sequence spread spectrum was devised for eavesdropping in the military .</u>

In the field of telecommunications , the Direct sequence spread spectrum , it is the technique of spread spectrum modulation which is used to reduce the overall inference of the signal .

4 0
3 years ago
2. List and elaborate on at least two limitations of the 24-hour recall as a
Pavlova-9 [17]

Answer:

The correct answer is - may not be typical, and participant burden.

Explanation:

The 24-hour recall is nothing but a retrospective method of diet assessment. In this method, an individual is interviewed about his or her diet consumption during the last 24 hours.

The disadvantages or limitations of this method include the inability of a single day's intake to describe the typical diet, multiple recalls to intake, cost and administration time; participant burden, have to recall to reliably estimate usual intake.

5 0
3 years ago
When ammonium phosphate and nickel(ii) nitrate solutions are mixed, what precipitates out?
Sphinxa [80]

2(NH4)3PO4 (aq) + 3Ni(NO3)2(aq) ------> Ni3(PO4)2(s) + 6NH4NO3 (aq)

Ni3(PO4)2 is a precipitate.

5 0
3 years ago
Read 2 more answers
Plz help me guys<br><br> A<br><br> B<br><br> C<br><br> D
Taya2010 [7]

Answer:

C

Explanation:

I think

3 0
3 years ago
Other questions:
  • How does the photoelectric effect show that light has some properties of a stream of particles.
    10·2 answers
  • 2 different elements have the same number of neutrons​
    8·1 answer
  • Colligative properties depend upon
    9·1 answer
  • How many different elements are in the compound sodium carbonate
    10·1 answer
  • List 2 everyday situations in which it would be useful to identify unknown substances.
    14·1 answer
  • How do the particles of a gas differ from the particles of a solid?
    13·1 answer
  • Give 2 Examples of gasses
    12·1 answer
  • A student mixed 75.0 mL of water containing 0.75 mol HCl at 25°C with 75.0 mL of water containing
    10·2 answers
  • Many of these microscopic organisms are _____, or unicellular.
    10·2 answers
  • Which of the following lists describes characteristics of a base? (3 points) Bitter taste, high pH, and caustic Bitter taste, lo
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!