Chemistry, 25.06.2020 02:01, alexciamartinez05
Calcium (Ca) and diatomic oxygen (O2) combine to form calcium oxide (CaO). The data table below compares the properties of these substances. Calcium (Ca) Oxygen (O2) Calcium Oxide (CaO) Melting Point (°C) 842 −218.4 2613 Density (g/cm3) 1.54 0.00143 3.34 Appearance silvery-white metal colorless, odorless gas white, odorless powder What can be concluded from this data?
Answers: 2
Chemistry, 22.06.2019 03:30, acaciacoats
The atomic radius of sodium is 186 pm and of chlorine is 100 pm. the ionic radius for na+ is 102 pm and for cl– is 181 pm. in going from na to cl in period 3, why does the atomic radius decrease while the ionic radius increases? a. the inner electrons in the sodium cation shield its valence electrons more effectively than the inner electrons in the chloride anion do. b. the inner electrons shield the valence electrons more effectively in the chlorine atom than in the chloride anion. c. the outermost electrons in chloride experience a smaller effective nuclear charge than those in the sodium cation do. d. the outermost electrons in chloride experience a larger effective nuclear charge than those in the sodium cation do. e. monatomic ions are bigger than the atoms from which they are formed.
Answers: 2
Chemistry, 22.06.2019 14:50, ladybugperez05
Which of the following is most likely true about water in chemical systems? a) water dissolves nonpolar ionic compounds. b) water dissociates ionic compounds. c) water dissociates covalent molecules. d) water dissolves nonpolar covalent substances.
Answers: 1
Calcium (Ca) and diatomic oxygen (O2) combine to form calcium oxide (CaO). The data table below comp...
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