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
Tpy6a [65]
3 years ago
7

The element X has 2 valence electrons. its is a

Chemistry
1 answer:
Lesechka [4]3 years ago
6 0

helium, beryllium, magnesium, calcium, strontium, barium, radium. i believe any of these are proper answers.


You might be interested in
Can someone please tell me the answer
Alexxx [7]

Answer:

52.068 amu

Explanation:

To calculate the average atomic mass of chromium, you have to first multiply the abundance of an isotope with its mass.

49.946 × 0.0435 = 2.173

51.941 × 0.838 = 43.527

52.941 × 0.0235 = 1.244

53.939 × 0.095 = 5.124

Next, add up all of the values, and you will get the average atomic mass.

2.173 + 45.527 + 1.244 + 5.124 = 52.068 amu

5 0
2 years ago
HELP HELP!
iogann1982 [59]
I believe it is wind
6 0
3 years ago
Read 2 more answers
The early universe was composed mainly of which two elements? hydrogen and helium carbon and oxygen hydrogen and oxygen carbon a
mrs_skeptik [129]
It took 380,000 years for electrons to be trapped in orbits around nuclei, forming the first atoms. These were mainly helium and hydrogen, which are still by far the most abundant elements in the universe.

Hope this will help you.
7 0
3 years ago
Read 2 more answers
How can i separate water salt starch​
omeli [17]
Decantation
Centrifugation
Filtration
Evaporation
4 0
3 years ago
Read 2 more answers
How does the law of conservation of mass apply to this reaction: C2H4 + O2 → H2O + CO2?
kozerog [31]

its d because it all has to be balanced

7 0
3 years ago
Read 2 more answers
Other questions:
  • Which of the following aqueous solutions are good buffer systems? . 0.29 M perchloric acid + 0.15 M potassium perchlorate 0.16 M
    5·1 answer
  • If an isotope of iron (Fe) has 23 electrons, what charge does it have?
    14·1 answer
  • A substance that is composed entirely of atoms which all have the same number of protons in their nuclei is known as _______. A.
    5·1 answer
  • What is the chemical formula for the binary compound composed of al3+ and o2- ions?
    13·1 answer
  • What type of bond would occur between lithium (Li) and oxygen (O)?
    6·1 answer
  • If you combined neon argon and helium together what would you expect to happen
    15·1 answer
  • What does it mean for a chemical to have a low potential energy?
    8·1 answer
  • Determine the direction of reaction if 1.00 M NOCl is combined with 0.500 M NO and 0.500 M Cl2 in a sealed flask. No reaction oc
    12·1 answer
  • What kind of information does this map show?
    13·2 answers
  • How many mL (to the nearest mL) of 0.140-M KF solution should be added to 400. mL of 0.212-M HF to prepare a pH
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!