Which of the following terms best describes the nucleus of a radioactive element?
C. Unstable
Answer:
Well I would say " I think my responsibility is recycling, gardening, picking up litter, and using less pollution. All of this stuff is very important. Sometimes, it's the tiny things that change the world for the better."
I hope this helped! Feel free to add your own little tweaks.
Answer:
The concentration is 0.065g/mL
Explanation:
Given
--- mass of salt
--- volume of water
Required
Determine the concentration (C)
This is calculated as:
<em>The concentration is 0.065g/mL</em>
Answer:
For carbon, the effective nuclear charge is 3.25 and the valence electrons will reside in the orbitals 2s^2 and 2p^2
For silicon, the effective nuclear charge is 4.15 and its valance electrons will reside in the orbitals 3s^2 and 3p^2
Explanation:
Carbon
The effective nuclear charge of carbon is 3.25
To get the orbitals in which it’s valence electron reside, let’s write the electronic configuration
The atomic number of carbon is 6
So the configuration will be;
1s^2 2s^2 2p^2
So the valence electrons will reside in the orbitals 2s^2 and 2p^2
For silicon;
It’s effective nuclear charge is +4.15
The electronic configuration of silicon with atomic number 14 is;
1s^2 2s^2 2p^6 3s^2 3p^2
So the valence electrons will reside in the orbitals 3s^2 and 3p^2
