(a)
Interpretation:
The number of protons and electrons in aS8 molecule needs to be deduced
Concept Introduction:
- Every system found in nature is a composite of atoms, molecules, ions or other particles
- These are composed of fundamental subatomic particles: protons, neutrons and electrons.
- Each atom is characterized by two quantities:
Atomic number (Z) andatomic mass (A)
Z = atomic number = number of protons = number of electrons ------ (1)
A = atomic mass = number of protons + number of neutrons ------ (2)
For an ion: number of electrons = number of protons + charge on the ion ------ (3)
(b)
Interpretation:
The number of protons and electrons in
Concept Introduction:
- Every system found in nature is a composite of atoms, molecules, ions or other particles
- These are composed of fundamental subatomic particles: protons, neutrons and electrons.
- Each atom is characterized by two quantities: Atomic number (Z) and atomic mass (A)
Z = atomic number = number of protons = number of electrons ------ (1)
A = atomic mass = number of protons + number of neutrons ------ (2)
For an anion: number of electrons = number of protons + charge on the ion ------ (3)
For a cation: number of electrons = number of protons - charge on the ion ------ (4)
(c)
Interpretation:
The number of protons and electrons in H2S molecule needs to be deduced
Concept Introduction:
- Every system found in nature is a composite of atoms, molecules, ions or other particles
- These are composed of fundamental subatomic particles: protons, neutrons and electrons.
- Each atom is characterized by two quantities: Atomic number (Z) and atomic mass (A)
Z = atomic number = number of protons = number of electrons ------ (1)
A = atomic mass = number of protons + number of neutrons ------ (2)
For an anion: number of electrons = number of protons + charge on the ion ------ (3)
For a cation: number of electrons = number of protons - charge on the ion ------ (4)
(d)
Interpretation:
The number of protons and electrons in
Concept Introduction:
- Every system found in nature is a composite of atoms, molecules, ions or other particles
- These are composed of fundamental subatomic particles: protons, neutrons and electrons.
- Each atom is characterized by two quantities: Atomic number (Z) and atomic mass (A)
Z = atomic number = number of protons = number of electrons ------ (1)
A = atomic mass = number of protons + number of neutrons ------ (2)
For an anion: number of electrons = number of protons + charge on the ion ------ (3)
For a cation: number of electrons = number of protons - charge on the ion ------ (4)
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Chapter 2 Solutions
Student Solutions Manual For Masterton/hurley's Chemistry: Principles And Reactions, 8th
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- D1. One atom has 20 protons and a mass number of 44. Another atom has 20 protons and a mass number of 40. (a) What is the similarity and dissimilarity in these atoms? (b) The atom combines with phosphate ion. Write the chemical formula and chemical name of the compound. (c) What is the valency and oxidation number of an atom in the elemental form?arrow_forwardBefore the use of systematic names, many compounds hadcommon names. Give the systematic name for each of the fol-lowing: (a) blue vitriol, CuSO₄₅H₂O; (b)slaked lime, Ca(OH)₂;(c) oil of vitriol, H₂SO₄; (d) washing soda, Na₂CO₃; (e) muriaticacid, HCl; (f) Epsom salt, MgSO₄₇H₂O; (g) chalk, CaCO₃; (h) dry ice, CO₂; (i) baking soda, NaHCO₃; (j) lye, NaOHarrow_forward2.43 g magnesium was completely burnt in oxygen to give magnesium oxide. 2 Mg(s) + O2(g) → 2 MgO(s) (Relative atomic masses: O = 16.0, Mg = 24.3) (a) Draw the electronic diagrams of O2 and MgO, showing electrons in the outermost shell only. (b) (i) How many mole of magnesium was present? (ii) How many mole of oxygen was required to completely react with the amount of magnesium in (i)? (iii) Hence, calculate the amount of oxygen required to completely react with the magnesium. (c) Similarly, calculate the amount of MgO formed.arrow_forward
- (a) What is a hydrocarbon? (b) Butane is the alkane with a chain of four carbon atoms. Write a structural formula for this compound and determine its molecular and empirical formulas.arrow_forward2) What is the mass of 5.13 moles of NazCr207?arrow_forwardPredict whether the following compounds are ionic or molecular:(a) KI, the compound used as a source of iodine in table salt(b) H2O2, the bleach and disinfectant hydrogen peroxide(c) CHCl3, the anesthetic chloroform(d) Li2CO3, a source of lithium in antidepressantsarrow_forward
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