Chapter 6

Question 0

Elements that have physical and chemical properties of both metals and non metals are known as __________

Answer 0

Metalloids

Question 1

The group 2A elements are known as ________ metals

Answer 1

Alkaline earth

Question 2

All elements try to achieve an outer most she’ll with eight valence electrons. This is known as a stable __________

Answer 2

Octet

Question 3

Identify the elements that are representative elements from the list given below. (Chose ones that are correct)
Na, Ca, Sc, Co, Ni, Si, N, Se, Cl, Ge

Answer 3

Na, Ca, Si, N, Se, Cl, Ge

Question 4

Why do elements in the same group have similar properties?

Answer 4

They have similar properties because they have the same number of valence electrons

Question 5

If something has a high ionization energy, what does that mean?

Answer 5

Woops

Question 6

Use the periodic table to write the names of:
a. The third alkali metal from the top

b. The transition metal

Answer 6

a. Potassium

b. Scandium

Question 7

Which element has a higher electronegativity?

a. Aluminum or Silicon
b. Sulfur or Selenium
c. Sn or I

Answer 7

a. Silicon
b. Sulfur
c. I

Question 8

Which element has a higher ionization energy?

a. Chlorine or Bromine
b. Sodium or Potassium
c. Lead or Rn

Answer 8

a. Chlorine
b. Sodium
c. Rn

Question 9

Two elements A and B have atomic numbers 8 and 17 respectively. Identify their group on the periodic table.

Answer 9

A: 16
B: 17

Question 10

Who am I? I am an element that has similar properties as oxygen and selenium. I have an atomic number greater then krypton but less then iodine

Answer 10

Tellurium

Question 11

Arrange the elements below in increasing order of their atomic size. 
Element A: 1s2 2s2 2p6
Element B: 1s2 2s2
Element C: 1s2 2s2 2p6 3s1
Element D: 1s2 2s2 2p3

Answer 11

1. Element A (Ne)
2. Element D (N)
3. Element B (Be)
4. Element C (Na)