Which of the following best helps explain the trend of increasing atomic radius from N to Bi ?

The attractive force between the val e- & the nuclei of atoms decreases.

Why does chlorine gain an electron to become a chloride ion?

An electron is attracted to the large effective nuclear charge

Which of the following is TRUE concerning sulfur?

It is a nonmetal and has six valence electrons

A common characteristic of the halogens is that they

have seven valence electrons and tend to form ions with a charge of -1

Which of the following statements best describes the alkaline earth elements?

They have two valence electrons, and they form ions with a 2+ charge

Which of the following best helps to explain why the atomic radius of K is greater than that of Br?

The effective nuclear charge is smaller for K for than for Br .

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Periodic Table

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Questions 15

Answers

1
Which group is the most reactive METALS?
alkaline earth
Transition
Halogens
Alkali
2
Which has the correct order for increasing Electronegativity?
F, O, N
Br, Cl, F
F, Cl, Br
Li, Na, K
3
Which of the following best helps explain the trend of increasing atomic radius from N to Bi ?
The number of particles in the nucleus of the atom increases.
The repulsive force btwn the val e- & e- in the inner shells decreases
The number of electrons in the outermost shell of the atom increases
The attractive force between the val e- & the nuclei of atoms decreases.
4
What is Mrs. Wieland's first name?
Natalie
Nicole
Christin
Joy
5
Why does chlorine gain an electron to become a chloride ion?
Adding an electron completely fills the s and p orbitals of energy level 3
Less shielding means there is room for another electron
Atoms become stable when they achieve a full octet
An electron is attracted to the large effective nuclear charge
6
Potassium and Cesium both belong to which family?
transition metals
alkali metals
halogens
alkaline earth metals
7
Which has a smaller Ionization Energy than Germanium (Ge)?
As
Si
Br
Sn
8
Which of the following is TRUE concerning sulfur?
It is a nonmetal and has six valence electrons
It is a metal and has four valence electrons
It is a metal and has six valence electrons
It is a nonmetal and has four valence electrons
9
A common characteristic of the halogens is that they
have seven valence electrons and tend to form ions with a charge of +
have one val electron and tend to form ions with a charge of +1
have seven valence electrons and tend to form ions with a charge of -1
have one val electron and tend to form ions with a charge of -1
10
Which one of the following is a halogen?
Tin
Tellurium
Strontium
Iodine
11
Which pair are elements of which the chemical properties of those elements are most similar.
sodium and magnesium
sodium and calcium
sodium and chlorine
bromine and chlorine
12
Which of the following statements best describes the alkaline earth elements?
They have two valence electrons, and they form ions with a 2+ charge
They have one valence electron, and they form ions with a 1- charge.
They have two valence electrons, and they form ions with a 2- charge
They have one valence electron, and they form ions with a 1+ charge.
13
Which has a larger Atomic Radius than Al?
Cl
Mg
B
Si
14
Which element is in period five group 2
Nb
Ba
Sr
Si
15
Which of the following best helps to explain why the atomic radius of K is greater than that of Br?
The first ionization energy of K is higher than that of Br
The effective nuclear charge is smaller for K for than for Br .
The val e- in K are in a higher principal energy level than those of Br .
In the ground state, an atom of K has fewer unpaired e- than atom of Br has

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