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
jek_recluse [69]
3 years ago
10

An atom of selenium (Se) forms a monatomic ion. Which of the following ions does it most likely form? Se2+ Se2 Se6+ Se6 *Not exp

ecting an answer, but an explanation to how to figure it out?*
Chemistry
2 answers:
sashaice [31]3 years ago
6 0

Answer:

Se2-

Explanation:

Selenium is in group six, it has the configuration 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p4. We can see that each selenium atom is missing two electrons to fill its fourth energy level. It is more energetically favorable for it to gain two electrons than lose four electrons. So the likely ion is Se2-

Nikolay [14]3 years ago
3 0
<span>I didn't know Selenium was considered organic? :P atoms form ions that mimic the electronic structure of noble gases. so add or subtract electrons from the atom to achieve the configuration of a noble gas.</span>
You might be interested in
An element has the mass number 12 and atomic number 6. The number of neutron in it is?
slamgirl [31]

Answer:

12-6=6

the answer is A)6

8 0
3 years ago
Based on the results you observed for the iodine test and Benedict’s test, is it better to detect enzyme activity by measuring t
dlinn [17]

Answer:

Is better use the Benedict's test by the increase in the amount of the products if the enzyme is a reductase

Explanation:

The Benedict's test works by the reaction of the reducing sugars with the ion cupric of the reactive. If the enzyme is a reductase (degrades polysaccharides into bi o monosaccharides), it should cut the polysaccharide bond and the products would react with the Benedict's cupric ion

I hope you undestand me

3 0
3 years ago
Of these non-metals which one is likely to be least reactive
natulia [17]

Answer:

the answer is the swecond option

Explanation:

Its b ur well come

7 0
3 years ago
Avergage speed is ______
sveticcg [70]

Answer:

The overall speed add then divide

Hope this helped :)

8 0
3 years ago
Read 2 more answers
The molar mass of H2O is 18.01 g/mol. The molar mass of O2 is 32.00 g/mol. What mass of H2O, ins grams, must react to produce 50
Ivan

Answer:

56.28 g

Explanation:

First change the grams of oxygen to moles.

(50.00 g)/(32.00 g/mol) = 1.5625 mol O₂

You have to use stoichiometry for the next part.  Looking at the equation, you can see that for every 2 moles of H₂O, 1 mole of O₂ is produced.  Convert from moles of O₂ to moles of H₂O using this relation.

(1.5625 mol O₂) × (2 mol H₂O/1 mol O₂) = 3.125 mol H₂O

Now convert moles of H₂O to grams.

(3.125 mol) × (18.01 g/mol) = 56.28125 g

Convert to significant figures.

56.28125 ≈ 56.28

5 0
3 years ago
Other questions:
  • What is sinking cold air and rising warm air?
    5·1 answer
  • Please help don't know how to do
    10·1 answer
  • Which element, if combined with chlorine, will have the greatest attraction for the chlorine electrons?
    13·2 answers
  • What is the molarity of a solution prepared by dissolving 12.0 g of sodium acetate, nac2h3o2, in water and diluting it to 250.0
    15·1 answer
  • Magnesium (average atomic mass = 24.3050 amu) consists of three isotopes with masses 23.9850 amu, 24.9858 amu, and 25.9826 amu.
    5·1 answer
  • In 1911, Ernest Rutherford tested the atomic model existing at the time by shooting a beam of alpha particles (42He, helium nucl
    13·1 answer
  • Select all that apply: Tonicity of a solution Check All That Apply is related to solute content.is related to solute content. is
    15·1 answer
  • Why are scientific models important in the study of science?
    13·1 answer
  • If air contains 78% Nitrogen by volume, what is the solubility of nitrogen in water at 25 degree celisus​
    13·1 answer
  • Uranium, an important component of both nuclear weapons and nuclearreactors, has two major isotopes, U-238, which has a half-lif
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!