(a)
Interpretation:
The number of protons and electrons in neutral copper atom needs to be determined.
Concept introduction:
In an atom, number of protons and electrons can be calculated from
(b)
Interpretation:
The number of protons and electrons in Cu+ ion needs to be determined.
Concept introduction:
In an atom, number of protons and electrons can be calculated from atomic number and mass number. The atomic number is equal to the number of protons and electrons present in the neutral atom. The mass number is sum of number of neutrons and protons in the nucleus of an atom. The positive and negative ions are formed due to difference in the number of protons and electrons in an atom. If number of electrons is more, the ion will be negatively charged and if number of protons is more, the ion will be positively charged.
(c)
Interpretation:
The number of protons and electrons in Cu2+ ion needs to be determined.
Concept introduction:
In an atom, number of protons and electrons can be calculated from atomic number and mass number. The atomic number is equal to the number of protons and electrons present in the neutral atom. The mass number is sum of number of neutrons and protons in the nucleus of an atom. The positive and negative ions are formed due to difference in the number of protons and electrons in an atom. If number of electrons is more, the ion will be negatively charged and if number of protons is more, the ion will be positively charged.
(d)
Interpretation:
The chemical formula of zinc acetate needs to be determined.
Concept introduction:
The overall ionic formula for a compound should be electrically neutral, that means it has no charge. When writing the formula for the ionic compound, the cation comes first, followed by the anion, both with numeric subscripts to indicate the number of atoms of each.
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