Chemistry, 06.07.2019 13:30 JaneciaMoss4490
Which statement best explains why calcium has a larger atomic radius than magnesium? a. calcium has a stronger nuclear charge than magnesium. b. calcium has electrons in more energy levels than magnesium. c. calcium has more neutrons than magnesium. d. calcium’s third energy level contains more electrons than magnesium
Answers: 2
Chemistry, 21.06.2019 19:10
Nuclear fusion is the source of energy for stars. besides hydrogen, which other element is most likely also common in stars?
Answers: 1
Chemistry, 22.06.2019 07:30
According to the vsepr theory what is the shape of a molecule that has a central atom valence three other items with no lone pairs of electrons
Answers: 1
Chemistry, 22.06.2019 14:00
The two naturally occurring isotopes of chlorine are 35cl (34.969 amu, 75.77%) and 37cl (36.966 amu, 24.23%). the two naturally occurring isotopes of bromine are 79br (78.918 rm amu, 50.69%) and 81br (80.916 amu, 49.31%). chlorine and bromine combine to form bromine monochloride, brcl. 1. how many peaks will be present in a mass spectrum for brcl? the four combinations of molecule possible given these four isotopes are: 81br37cl, 81br35cl, 79br37cl, and 79br35cl. 2. what are the masses of the four different brcl molecules? express the masses using six significant figures, in decreasing numeric order (highest to lowest), separated by commas.
Answers: 3
Chemistry, 23.06.2019 07:00
Scuba divers use tanks of compressed air to them breathe. gases can be compressed because?
Answers: 1
Which statement best explains why calcium has a larger atomic radius than magnesium? a. calcium has...
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