Chemistry - Periodic Table

Which group of elements in the Periodic Table contains a metalloids?

13

Which group is known as halogens?

17

The least active metal of those represented below has an electron configuration abbreviated as

2-8-18-18-2

Which of the following period 3 elements has the least metallic character? A) Si B) Al C) Na D) Mg

A) Si

Elements in the ____________ family are so chemically active that they occur naturally only in compounds

Alkali metals + alkaline earth metals

Which element in period 5 of the Periodic Table is a transition element? A) Sr B) Ag C) Sb D) Xe

B) Ag

Which elements has properties most like those of magnesium? A) sodium B) calcium C) cesium D) potassium

B) calcium

Which element in group 15 has the most metallic character? N, P, As, Bi

Bi

Which lists consists of elements that have the most similar chemical properties A) Mg, Al, Si B) K, Al, Ni C) Mg, Ca, Ba D) K, Ca, Ga

C) Mg, Ca, Ba

Compared to the atoms of nonmetals in period 3, the atoms of metals in period 3 have A) fewer electron shells B) more electron shells C) fewer valence electrons D) more valence electrons

C) fewer valence electrons

An atom of an element has 17 protons, 18 neutrons, 17 electrons... this element is A) noble gas B) alkaline earth metal C) halogen D) alkali metal

C) halogen

In which section of the Periodic Table are the most active metals located? A) lower right corner B) upper right corner C) lower left corner D) upper left corner

C) lower left corner

Atoms of which of the following elements has the smallest atomic radius?

Cl

Which of these elements has the highest attraction for electrons? A) oxygen B) nitrogen C) chlorine D) Flourine

D) Flourine

An atom in the ground state has a stable valence electrons configuration. This atom could be A) Al B) Na C) Cl D) Ne

D) Ne

A chloride dissolves in water to form a colored solution. Which of the following could the chloride be? A) HCl B) KCL C) CaCl2 D) NiCl2

D) NiCl2

Which particle has the largest radius? A) Cu+2 B) Cu C) Se D) Se-2

D) Se-2

The observed regularities or patterns in the properties of elements are periodic functions of their A) non valence electrons B) Oxidation States C) Mass numbers D) atomic numbers

D) atomic numbers

An atom with the electron configuration 2-8-2 would most likely

Decrease in size as it forms a positive ion

As you go across (left to right) the periodic table, the atomic radius of each successive atom ________ because the nuclear charge __________

Decreases, increases

Which general trend is found in period 3 as the elements are considered in order of increasing atomic number?

Increasing electronegativity

In period 4, as the elements are considered from left to right there is an increase in....

Ionization energy + electronegativity

____________ and ______________ are liquid at room temperature

Mercury & Bromine

Atoms that have high ionization energies and poor electrical conductivity are usually ___________________

Nonmetals

Rank the following in order of increasing radius, given their positions on the periodic table S, S-2, Cl

S-2,S,Cl

A Ca+2 ion differs from a Ca atom in that Ca+2 ion is ___________________ because it has ______________

Smaller, less electron

Which elements are malleable and good conductors of electricity?

Sn & Ag

What is a property of most metals?

They tend to lose electrons easily when bonding