The Structure Of Atoms 3.1 Flashcards
A proton is
Which of the following completes the sentence above?
A located in the orbital of an atom.
B a part of an atom that does not have a b charge.
C a part of an atom that can lose an electron and become negatively charged.
D the part of an atom counted to determine the atomic number of an element.
the part of an atom counted to determine the atomic number of an element.
Which of the following statements is true?
A Valence electrons are located in the outermost shell of an atom.
B Orbitals are sets of electron-containing shells.
C Up to four electrons can be held in one orbital.
D The number of orbitals that an atom has is the same for all elements.
A Valence electrons are located in the outermost shell of an atom.
The atomic number of an element ______
Which of the following completes the sentence above?
A is the combined mass of its protons plus neutrons.
B varies depending on whether the element is in its solid or liquid state.
C is the same as its number of protons in one atom.
D does not have any relationship to the order in which that element is listed in the periodic table.
is the same as its number of protons in one atom.
Which of the following statements is true about isotopes?
All isotopes of an element have the same number of protons and electrons.
All isotopes of an element have the same number of neutrons.
Isotopes of a given element have different chemical properties.
Isotopes of a given element all have the same atomic mass.
All isotopes of an element have the same number of protons and electrons.
A positively charged ion is called which of the following?
Isotope
Cation
Proton
Orbital
Cation
An electron is. _________
Which of the following completes the sentence above?
located in the orbital of an atom.
a part of an atom that has a positive charge
a part of an atom that can lose a proton and become positively charged.
the part of an atom counted to determine the atomic number of an element.
located in the orbital of an atom.
Which of the following statements are true? (Select all that apply.)
Valence electrons are located in the nucleus of an atom.
Shells are sets of electron-containing orbitals.
Up to two electrons can be held in one orbital.
All valence shells can hold up to eight electrons.
Shells are sets of electron-containing orbitals.
Up to two electrons can be held in one orbital.
Which of the following statements is true?
The periods of elements in the periodic table consist of elements that have similar properties.
Periods in the periodic table correspond to the shell number of valence shells.
The number of neutrons in one atom of an element is the same as its atomic mass.
Group columns in the periodic table are based on neutron configurations.
Periods in the periodic table correspond to the shell number of valence shells.
Which of the following statements is true about atomic number or atomic mass?
Atomic number is determined by the sum of the neutrons and protons in an atom.
lons have different atomic numbers from the neutral atom of the same element.
Atomic mass is the sum of the number of protons and the number of neutrons.
Atomic mass is the sum of the number of electrons and the number of protons.
Atomic mass is the sum of the number of protons and the number of neurons.
Which of the following are versions of the same element that have different numbers of neutrons?
A Isotopes
B lons
C Groups
D Valence shells
Isotopes
nich of the following neutral atoms would have 10 otons, 11 neutrons, and 10 electrons?
Neon
Sodium
Calcium
Boron
Neon
2 Two isotopes of carbon are found, one with an atomic mass of 12 and the other 14. Which of the following best describes how these isotopes differ?
A. The number of protons and electrons is different.
B. Carbon 12 has fewer protons than carbon 14.
C. Carbon 14 has more neutrons than carbon 12.
D. Carbon 12 has two fewer electrons than carbon 14.
Carbon 14 has more neutrons than carbon 12
- A neutral atom of calcium has two electrons in its outer shell. Which of the following will occur when calcium forms an ion?
A Calcium will lose two electrons to have a full valence
shell.
B. Calcium will gain two electrons to have a full valence shell.
C. Calcium will add two protons to become neutral.
D. Calcium will add six electrons to have a full valence shell.
Calcium will lose two electrons to have a full valence shell
- Which of the following best describes an oxygen atom with 8 protons and 10 electrons?
A. An anion with a -2 charge
B. A cation with a +2 charge
C. An anion with an atomic mass of 18
D. A cation with a positive charge of +2
An anion with a -2 charge
Atomic mass
Atomic number
Atomic mass = number of protons and neutrons
Atomic number = number of protons
