Answer:
This is because their atoms have the same number of electrons in the highest occupied energy level. Li lithium and K potassium both belong to first group (alkali metals) and thus have similar chemical properties.
Explanation:
Answer:
The molar mass and molecular weight of 3CaCl2 is 332.952.
Answer:
A cation is formed when a metal ion loses a valence electron while an anion is formed when a non-metal gains a valence electron. They both achieve a more stable electronic configuration through this exchange.
Answer:
1720 MeV
Explanation:
Thorium has 90 protons and 142 neutrons
The mass of each proton is 1.007277 amu
The mass of each neutron is 1.008665 amu
The mass of 90 protons is 90 * 1.007277 amu = 90.65493 amu
The mass of 142 neutrons is 142 * 1.008665 amu = 143.23043 amu
Total calculated mass of nucleons = 90.65493 amu + 143.23043 amu = 233.88536
Mass defect = 233.88536 amu - 232.038 amu = 1.84736 amu
We convert from amu to MeV using the conversion factor of 931
Binding energy = 1.84736 amu * 931 = 1720 MeV
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