I .
One way the periodic table is organized is in vertical columns
known as groups. These groups are further organized into A and
B groups. The group 7A indicates:
0
7 valence electrons, 1 - ionic charge, nonmetal,
halogens
1 valence electron, 1 - ionic charge, metals, alkali
metals
8 valence electrons, metals, no ion formation, noble
gases
7 valence electrons, 7 + ionic charge, nonmetals,
halogens

Consider the two electron arrangements for neutral atoms a and b. are atoms a and b the same element? a - 1s2, 2s2, 2p6, 3s1 b - 1s2, 2s2, 2p6, 5s1

What approach is required to balance the objectives of sustainable development? balancing the objectives of sustainable development requires a(n) .

Both josef loschmidt and amedeo avogadro contributed to our understanding of basic molecular numbers, sizes, and reaction ratios. neither scientist discovered “avogadro’s number” in the form we use it today (6.02 x 10 23). still, there’s a controversy over the name. research the contributions from these two scientists and read about how avogadro’s number got its name. briefly state what you think this number should be called, providing key details of each scientist’s contributions to this concept and a solid rationale for your case in naming the number.