Exam 7: Electron Configuration and the Periodic Table

Which two electron configurations represent elements that would have similar chemical properties? (1) 1s²2s²2p⁴,(2)1s²2s²2p⁵,(3)[Ar]4s²3d¹⁰4p³,(4)[Ar]4s²3d¹⁰4p⁴

The ionic radius is the distance between the nucleus and valence shell of an anion or cation.A cation is ___________ than the parent atom it belongs to and an anion is ____________ than the parent atom it belongs to.

A magnesium ion,Mg²⁺,has

An oxide ion,O^2-,has

The electron affinity of oxygen is equal to

What is the definition of nuclear charge,labeled Z?

Which of these ground-state ions has unpaired electrons?

Which pair of ions exhibits the greatest attractive force between them?

The chief contribution of physicist Henry Moseley to atomic theory was

Which of these species make an isoelectronic pair: Cl^-,O^2-,F,Ca²⁺,Fe³⁺?

Which of these elements has the smallest first ionization energy?

Which element in Group 7A has the smallest atomic radii?

How many total electrons are present in chloride ion?

The periodic table was first arranged according to increasing atomic masses.

Which of the following elements has the smallest atomic size?

Which of the elements listed below has the greatest atomic radius?

In 1864,the English chemist John Newlands noticed that when the elements were arranged in order of increasing atomic mass,every eighth element had similar properties.Newlands referred to this relationship as the

How many protons and electrons are present in one Br^- ion?

Anions of Group 7A elements are isoelectronic with what group?

Which of the following elements has the largest second ionization energy (IE₂)?