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
insens350 [35]
3 years ago
11

PLEASE HELP ME :( It’s urgent!!!!!

Chemistry
1 answer:
MrRa [10]3 years ago
5 0

Answer:

C and D

Explanation:

In the first table, both element particles have more electrons than protons which is unusual and indicates they have a negative charge. Furthermore both numbers add up to full electron shells (2,8 and 2,8,8) meaning they are ions (charged particles formed to gain full valence shells and become stable), so it is C for the first question, negative ions.

As for the second one, isotopes like versions of the same element except with different numbers of neutrons, so they are still the same element but have different mass. As shown here the numbers indicate the number of neutrons therefore it is D, 3 more neutrons and no more electrons.

Hope this helped!

You might be interested in
17 p<br> 18 n<br> What is the atomic number of this element?
Verdich [7]

Answer:

Chlorine

Explanation:

The P usually stands for Protons, and that is usually the element number. (chlorine is 17) N is for neutron

6 0
3 years ago
4) The Maunder Minimum would include which of the following years? A. 1855 - 1900 B. 1910 - 1930 C. 1979 - 1987 D. 1670 - 1700 S
ivolga24 [154]
The answer is B 
have a nice day.....

4 0
3 years ago
68 POINTS WILL GIVE BRAINliest!!!
AleksandrR [38]

Answer:

D

C

Explanation:

4 0
3 years ago
Read 2 more answers
Which reactant will be in excess, and how many moles of it will be left over?
timofeeve [1]

Answer:

Oxygen with 0.36 moles left over

Explanation:

5 0
3 years ago
Read 2 more answers
Calculate the number of neutrons in potassium-40.
dsp73

Answer:

21 neutrons

Explanation:

There are 21 neutrons in Pottasium-40

5 0
3 years ago
Read 2 more answers
Other questions:
  • How much solution could be heated to boiling by the heat evolved by the dissolution of 24.0 g of naoh? (for the solution, assume
    12·1 answer
  • You need a 20% alcohol solution. on hand, you have a 240 ml of a 15% alcohol mixture. you also have 40% alcohol mixture. how muc
    9·1 answer
  • For the reaction 2Na + Cl2 → 2NaCl, how many grams of chlorine gas are required to react completely with 57.5 mol of sodium?
    5·1 answer
  • Trimix is a general name for a type of gas blend used by technical divers and contains nitrogen, oxygen and helium. In one Trimi
    6·1 answer
  • The drug molecules bind the protein in a 1:1 ratio to form a drug-protein complex. The protein concentration in aqueous solution
    15·1 answer
  • How many moles in 1.00g of salicylic acid?
    7·1 answer
  • Please Help Me!!
    8·2 answers
  • 2Na + Cl2 → 2NaCl
    8·1 answer
  • If a body`s efficiency is 75% what does it mean?​
    6·1 answer
  • Which coefficients correctly balance the formula equation below? NH 4 NO 2 (s) N 2 (g)+H 2 O(l) A. 1, 2, 2 C. B. 2, 1, 2 D. 1, 2
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!