Periodic Trends

Front

Which of the following pairs has the highest ionization energy? Options: Li and Na, P and S, N and O, Fe and Co

Back

N and O

Front

Which elements in the periodic table have the highest first ionization energies? Options: transition elements, alkaline earth metals, alkali metals, noble gas elements

Back

noble gas elements

Front

Which of the following elements has the smallest radius? Options: Mg, Al, Si, K

Back

Si

Front

Which of the following atoms or ions is the largest in diameter? Options: C, P, Te^2-, Se

Back

Te^2-

Front

Which element has an electron affinity close to zero? Options: nitrogen, phosphorus, boron, oxygen

Back

nitrogen

Front

Arrange the following sets of elements in order of INCREASING metallic radii: Cs < Ba < La < Hf < Ta, Al < Si < P < S < Cl, Be < Mg < Ca < Sr < Ba, Rb < K < Na < Li < H

Back

Be < Mg < Ca < Sr < Ba

Front

Why do noble gases have the highest first ionization energies?

Back

An electron is harder to remove from a noble gas due to it being tightly bound by the inner nucleus.

Front

Variation of Ionization with Atomic Number
The picture shows the plot of the variation of the first ionization energy with the atomic number of the periodic elements. Why do the ionization energies of boron, oxygen, aluminum, and sulfur dip? Options: the nuclear charge increases with atomic number., the ionic radii decreases from B to Al and O to S., less energy is required to remove a "p" electron than an "s" electron., these elements have stable electron configurations.

Back

less energy is required to remove a "p" electron than an "s" electron.

Front

Which periodic group exhibits BOTH high ionization energies and large negative electron affinities? Options: alkali metals, transition elements, inert gases, halogens

Back

halogens

Front

Periodic Table of Elements: In which area of the periodic table do the elements Nihonium (Nh-113), Moscovium (Mc-115), Tennessine (Ts-117), Organessum (Og-118) belong?

Back

The seventh row of the Periodic Table.