Answer:A B
How many electrons are there in Florine with a -1 charge? 10
What is the total number of nucleons in helium? 4
What is the mass number of an element if it contains 19 protons, 19 electrons, and 20 protons? 39
What is the atomic number of an element with 7 protons, 10 electrons, and 7 neutrons? 7
Explanation: Credit to GOOGLE
Explanation:
We will use the following equation,
(a) Now, we will calculate the value of 
as follows.
= 0.377
As, the 
is 0.21 (which is smaller than the value) this means that equilibrium will shift to the left
.
(b) 
= 0.1155
Here, is smaller than 
which means that the equilibrium will shift to the right.
(c) 
= 0.119
Here, is smaller than which means that the equilibrium will shift to the right
.
(d) 
= 0.21
Since, here the value of comes out to be equal to the given value. Therefore, this reaction is at equilibrium.
(e) 
= 0.36
Here, is higher than the reaction will shift to the left.
<span>Carbon has different isotopes. What is different between an atom of 12C and an atom of 13C?
Question 7 options:
A.number of protons in the nucleus
B.number of electrons in the atom
C.number of protons and electrons in the atom This is correct.
D.number of neutrons in the nucleus</span>
