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
tigry1 [53]
3 years ago
7

Which of the following ions would represent the ion of an element from Group 2A?

Chemistry
2 answers:
Margaret [11]3 years ago
8 0
The best and most correct answer among the choices provided by the question is the fourth choice or letter D.
 <span>A2+ would represent the ion of an element from Group 2A</span>

I hope my answers has come to your help. God bless and have a nice day ahead!
Lina20 [59]3 years ago
3 0

An element belongs to particular group is related to the number of electrons present in the outer shell of the atoms. In given case, group is 2, therefore, number of valence electrons is 2 implies it has ability to lose two electrons to get +2 charge.

A\rightarrow A^{+2}+2e^{-}

Therefore, ion formed after removal of two electrons is A^{2+}.

Hence, option (D) is the correct answer.






You might be interested in
How did Alexander effect the people of Judah?​
Tasya [4]

Answer:

he brought language and culture

Explanation:

3 0
3 years ago
Determine a massa, em kg, de um material que está contida em um volume de 18L. Sabe-se que a densidade do material é de 0,9 g/cm
suter [353]
The question in English is "<span>Determine the mass, in kg, of a material that is contained in a volume of 18L. It is known that the material density is 0.9 g/cm 3"

Answer: 
</span>
We can use a simple equation to solve this problem. <span>
    d = m/v</span><span>

<span>Where </span>d <span>is the density, </span>m <span>is the mass and </span>v is the volume.

d = </span>0.9<span> g/cm³
m = ?
v = </span>18 L = 18 x 10³ cm³<span>

By applying the equation,
<span>    0.9 g/cm³ = m / </span></span>18 x 10³ cm³<span>
                  m = 0.9 g/cm³ x </span>18 x 10³ cm³<span> 
<span>                  </span>m = 16200 g
                  m = 16.2 kg

Hence, the mass of 18 L of material is 16.2 kg.</span>
6 0
2 years ago
Is a candle smelling like a pine tree is that a chemical change chemical property physical change or physical property?
Anna [14]
Smell is a type of Physical property
5 0
3 years ago
Chemistry Questions<br>5) What is matter? Mention the characteristic of particles of matter.​
Virty [35]
Matter is everything we see and cant see and sometimes touch. Some characteristic are: solid, liquid, gas and plasma. I hope this helps :)
5 0
2 years ago
Two compounds contain only tin and chlorine. the ratio of the masses of chlorine combined with 1.00g of tin in the two compounds
Nesterboy [21]
Compound A : SnCl2
the mass ratio of Cl and Sn: 71 g Cl/ 119 g Sn = 0.579 g Cl/ 1 g Sn
Compound B: the ratio of mass of chlorine per 1 g Sn is twice the ratio of chlorine per 1 g Sn in compound A => 1,194 g Cl/ 1 g Sn = 142,086 g Cl/ 119 g Sn
=> the number of chlorine/ 1 atom Sn = 142.086/ 35.5 = 4.
=> the formula of B: SnCl4
3 0
2 years ago
Other questions:
  • Explain how you determine the number of valence electrons that should be used in the dot structure for silicon dioxide and state
    14·1 answer
  • A. Explain, in terms of particles, why NaCl(s) does not conduct electricity.
    14·1 answer
  • Calculate the number of kilojoules to warm 125 g of iron from 23.5 °C to 78.0 °C.
    7·1 answer
  • Help please I need it bad
    5·1 answer
  • What would happen if the earths orbit was longer or shoter?
    14·2 answers
  • How do we determine the number of electrons in a neutral atom?
    13·1 answer
  • 13. A mixture of MgCO3 and MgCO3.3H2O has a mass of 3.883 g. After heating to drive off all the water the mass is 2.927 g. What
    13·1 answer
  • What the 4 main parts to a flower<br> science i cant find it in the supject
    14·2 answers
  • Is anyone having a <br> meeting only for studies?
    6·2 answers
  • Which energy changes are associated with a liquid boiling?
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!