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
m_a_m_a [10]
3 years ago
14

Which change occurs when a barium atom loses two electrons?(1) It becomes a negative ion and its radius decreases.(2) It becomes

a negative ion and its radius increases.(3) It becomes a positive ion and its radius decreases.(4) It becomes a positive ion and its radius increases.
Chemistry
2 answers:
OleMash [197]3 years ago
6 0

Answer:

The correct answer is option 3, It becomes a positive ion and its radius decreases

Explanation:

As per the Octet rule, Barium has 2 electrons in its outermost shell. When it loses the two electron it gains two positive charge i.e Ba2+. As the barium loses the two electron from its outermost shell, the outermost shell becomes vacant and thus is no more considered as a part of atomic geometry of the barium atom and since the outermost shell is considered negligible the radius of barium atom reduces automatically.  

Tcecarenko [31]3 years ago
5 0
<h2>Changes Occurs when a Barium Atom - Option 3  </h2>

When a barium atom loses two electrons it becomes a positive ion and its radius decreases. Barium (Ba) has atomic number 56 so it has 2 electrons in first shell of an atom to become stable according to duplet rule. Then other 52 electrons revolve in the shells according to octet rules.

Another 2 electrons are in the outermost shell. To become stable electrons lose to form barium ions (Ba+2). Hence, by losing 2 electrons the outermost shell will be diminished so its radius decreases and by losing electrons it becomes positive ions.

You might be interested in
Why is the average atomic mass used when calculating grams of a substance?
galina1969 [7]
The average atomic mass includes all of the isotopes of that atom which exist in nature. Almost all elements have at least two isotopes which naturally occur. 
Recall that isotopes are atoms with the same atomic number (protons), but a different number of neutrons. Since neutrons contribute the same amount of mass as a proton (1 amu), differing numbers of neutrons will change the mass of the atoms.

If you like my answer, please vote me a 'brainliest'; trying to improve my site stats :-)
4 0
3 years ago
Read 2 more answers
How do seismologists, or scientists who study earthquakes, know that the largest known earthquake to hit the region occurred aro
denis23 [38]

Answer:

By looking at the amount of time between the P and S wave on a seismographs recorded on a seismograph, scientists can tell how far away the earthquake was from that location. However, they can't tell in what direction from the seismograph the earthquake was, only how far away it was.

Explanation:

5 0
3 years ago
Why does electronegativity increase as you move from left to right across
Katen [24]

Answer: increasing number of protons increases the positive charge of the nucleus.

Explanation: because as the electronegativity moves from left to right on the periodic table the protons do increase to make it into a positive charge.

7 0
3 years ago
How many 250 mg tablets of metronidazole are needed to make 150 mL of suspension containing
Neko [114]

Answer:

How many 250 mg tablets of metronidazole are needed to make 150 mL of suspension containing

100 mg/mL?

a. 25

b. 30

c.50

d. 60

Explanation:

<em>if </em><em> </em><em>mali </em><em>po </em><em>I'm</em><em> </em><em>so </em><em>sorry</em>

7 0
2 years ago
I'll GIVE YOU THE BRAINLIEST!!!!!!!!!!!!!!!!!!!!
ahrayia [7]
Sea arch, headland, sea cave, cliff, sea stack sorry if I’m wrong hope this helped
3 0
2 years ago
Other questions:
  • To complete the following chemical equation, what coefficients must be added? _____ Ca(OH)2 + _____ H3PO3 yields _____ Ca3 (PO3)
    8·1 answer
  • You are Investigating an organic compound. It has the following characteristics: an oxygen atom Is bonded to two carbon groups,
    8·1 answer
  • Avogadro constant is 6.02 1023 (the number of atoms or molecules per mole). What how much charge is there in 1 mole of electrons
    13·1 answer
  • How to tell if my c- r -u -s- h f -o- r t -w -o y -e -a -r-s l-i-k-e-s me or not
    12·2 answers
  • How do you figure out the electron configuration of an element?
    13·1 answer
  • A heliox tank contains 32% helium and 68% oxygen. The total pressure in the tank is 475 kPa. What is the partial pressure of hel
    12·1 answer
  • What will happen to the equilibrium of this reaction if HCl gas is injected into the system?
    7·1 answer
  • Trial 1: Heat 30.0 grams of water at 0 °C to a final temperature of 40.0 °C.
    5·1 answer
  • How many moles of oxygen are required to react completely with 5.00 grams of hydrogen?
    13·1 answer
  • HELP ASAP DUE TODAY!!
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!