Unit 7 Application

Question 0

The portion of the atom that is most actively involved in chemical reactions is the…

Answer 0

Valence electron/level

Question 1

Which of the following elements belong to the same chemical family? P, Cl, As, Ge?

Answer 1

P and As

Question 2

Which element is the most active member in the calcium family?

Answer 2

Radium (Ra)

Question 3

Write the symbol for a metal loud is the fourth period

Answer 3

Ge or As

Question 4

All of the Noble gases have ______ electrons in the valence shell except for the element________

Answer 4

8 electrons, Helium (He)

Question 5

Which element in the fourth series is most chemically similar to silicon

Answer 5

Ge

Question 6

Positive ions are most likely to be formed to be from (metals, metalloids, non metals, Noble gases)

Answer 6

Metals

Question 7

The rare earth elements are formed as a result of filling (s, p, d, f) ______ orbitals. (List all the apply)

Answer 7

f orbitals

Question 8

An element has a valence electron configuration of ns with a 2 at the top thing and np with a 3 at the top thing. The element ( is a metal, is a nonmetal, is a metalloid, could be anything but a noble gas)_____

Answer 8

Could be anything but a noble gas

Question 9

Which of the elements listed is not a transition element? Fe, Sc, Cu, Pt

Answer 9

Sn

Question 10

Which element from the third series is least likely to form a compound?

Answer 10

Ar

Question 11

Which element forms a +2 ion that is isoelectronic with a xenon atom

Answer 11

Barium

Question 12

An atom that is very aggressive in gaining electrons is considered an active (metal, metalloid, nonmetal, Nobel Gas)

Answer 12

Nonmetal

Question 13

Ionization energy values for elements are (always ectothermic, always endothermic, sometimes exothermic and sometimes endothermic, or not related to energy)?

Answer 13

Always endothermic

Question 14

In a series of isoelectronic particles, the sizes of the particles( increase, decrease, remain the same)_______ as the atomic number increases

Answer 14

Decrease

Question 15

When a magnesium atom becomes a cation, it will (gain, loose) ____ electrons and ______ ( increase, decrease, not change) _______ it’s size.

Answer 15

Lose, decrease

Question 16

A compound of aluminum has the formula Al(2 that is lowered)X(3 that is lowered). Element X is probably a member of the ______ family.

Answer 16

Group 16(6A)

Question 17

Barium is likely to form a _____ ion during a chemical reaction.

Answer 17

Positive or 2+

Question 18

The most electronic negative element on the periodic table is____

Answer 18

Fluorine (F)

Question 19

A neutron atom of nickel contains ____ valence electrons.

Answer 19

Two

Question 20

Name the family if elements that have seven valence electrons on their atoms.

Answer 20

Halogens ( Group 17, or 7A)

Question 21

Write the symbol ( with charge if applicable) or circle the answer that best fits the criteria indicated.
Smaller radius: Ca or K

Answer 21

Ca

Question 22

Write the symbol ( with charge if applicable) or circle the answer that best fits the criteria indicated.
Larger ionization energy(I. E) S or Al

Answer 22

S

Question 23

List the energy sublevels in the order they are filled for the elements in period 6

Answer 23

6s,4f, 5d, 6p