Thank you for the free 15 points .
Hey there!
In hyphenated notation, we have the name of the element, a hyphen, then a number that is the sum of protons and neutrons.
The first isotope has 3 protons and 3 neutrons, so the sum is 6. Its name is lithium-6.
The second isotope has 3 protons and 4 neutrons, so the sum is 7. Its name is lithium-7.
Hope this helps!
The Spherical Shape of the Earth<span>. Because the </span>Earth<span> is a sphere, the surface gets much more intense sunlight, hence heat, at the equator than at the poles. ... The distribution of heat around the globe, and through the year, coupled with the physical properties of air, produce a distinctive pattern of </span>climatic<span> zones.</span>
