complete the following information for lithium.\n# of protons # of electrons # of neutrons total number of…
complete the following information for lithium.\n# of protons # of electrons # of neutrons total number of particles group period\n3 3
Answer
Explanation:
Step1: Determine number of neutrons
Lithium - 7 is the most common isotope. Mass number (A) = 7, atomic number (Z) = 3. Number of neutrons (N)=A - Z. So, N = 7 - 3 = 4.
Step2: Calculate total number of particles
Total number of particles = number of protons+number of electrons+number of neutrons. So, 3 + 3+4 = 10.
Step3: Find group number
Lithium has 1 valence electron, so it is in Group 1 (alkali metals).
Step4: Find period number
Lithium has 2 electron - shells, so it is in Period 2.
Answer:
| # OF PROTONS | # OF ELECTRONS | # OF NEUTRONS | TOTAL NUMBER OF PARTICLES | GROUP | PERIOD |
|---|---|---|---|---|---|
| 3 | 3 | 4 | 10 | 1 | 2 |