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
IrinaVladis [17]
4 years ago
12

Which of these pairs of elements have the same number of valence electrons?

Chemistry
1 answer:
Anuta_ua [19.1K]4 years ago
4 0

answer is A- hydrogen (H) and helium (He)

You might be interested in
G what is the difference between the sidechains of leucine and isoleucine? select one:
statuscvo [17]

c. Isoleucine has a carbon “branched” closer to the alpha carbon than does leucine.

The structure of leucine is CH3CH(<u>CH3</u>)CH2CH(NH2)COOH.

The structure of isoleucine is CH3CH2CH(<u>CH3</u>)CH(NH2)COOH.

In leucine, the CH3 group is <em>two carbons away</em> <em>from</em> the α carbon; in isoleucine, the CH3 group is on the carbon <em>next to</em> the α carbon.

Thus, <em>isoleucine</em> has the closer branched carbon.

“One is charged, the other is not” is i<em>ncorrect</em>. Both compounds are uncharged.

“One has more H-bond acceptors than the other” is <em>incorrect</em>. Each acid has two H-bond acceptors — the N in the amino and the O in the carbonyl group.

“They have different numbers of carbon atoms” is <em>incorrec</em>t. They each contain six carbon atoms.

4 0
3 years ago
What are 4 similarities of Metals, Nonmetals, and Metalloids?
igor_vitrenko [27]
The answer is           


e o i and a



not really sure forgive me if im wrong


7 0
3 years ago
What is the term for a type of reaction in which an acid and a base react to produce a salt and water?
WINSTONCH [101]
Neutralization 
is the probable answer, which I don't know how to explain, but I know that's the answer because I learned about it a few years ago and I'm pretty smart. =]

5 0
3 years ago
 It is the kind of interaction in which both organisms benefit from each other. *​
MArishka [77]

Answer:

Mutualism

Explanation:

4 0
3 years ago
Is carbon a metal or a nonmetal? How many valence electrons does a carbon atom have?
marshall27 [118]

Answer:

Carbon is a solid non-metal element. Carbon has eight valence electrons.

Explanation:

hope this helps!

7 0
3 years ago
Other questions:
  • What is the most abundant gas in Earth's present day atmosphere?
    15·1 answer
  • How could you ensure that all the spectroscopes used the same calibration line and equation? What would you need to be sure was
    12·1 answer
  • Which is an element? water carbon dioxide air hydrogen?
    8·2 answers
  • Bromine has an atomic number of 35. How many protons are in an atom of bromine? 17 18 35 52
    5·1 answer
  • If a weak acid is 25 deprotonated at ph 4 what would the pka be
    7·1 answer
  • Why is the deuterium-tritium reaction the most promising nuclear fusion reaction for future energy production?
    13·2 answers
  • how do modern tools such as Doppler radar satellite weather balloons and computers help meteorologist understand weather
    11·1 answer
  • 3. the [OH-] of a solution with a [H+] of 9.3 x 10^-4 M
    12·1 answer
  • How much potassium chlorate would dissolve in 200g water at 20°C?​
    9·1 answer
  • The taste of acid is sour​
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!