P-block Elements Group -15,16,17,18

Question 1

What are nitrogen group elements (nictogens), and what is group 15 also known as? Write the names of the group 15 elements.

Answer 1

Group 15 elements are also called Pnictogens.

The elements in group 15 are:

1. Nitrogen (N)
2. Phosphorus (P)
3. Arsenic (As)
4. Antimony (Sb)
5. Bismuth (Bi)

Question 2

What are the elements in group 15 of the periodic table commonly known as?

Answer 2

Nitrogens

Question 3

Which element in group 15 is a gas at room temperature?

Answer 3

Nitrogen

Question 4

True or False: Phosphorus is a metalloid.

Answer 4

False

Question 5

Which group 15 element is most abundant in the Earth’s crust?

Answer 5

Phosphorus

Question 6

What is the primary natural source of nitrogen in the atmosphere?

Answer 6

Nitrogen gas (N2)

Question 7

Which group 15 element has allotropes that include white, red, and black forms?

Answer 7

Phosphorus

Question 8

What is the most stable allotrope of phosphorus?

Answer 8

Red phosphorus

Question 9

True or False: Arsenic is a non-metal.

Answer 9

False

Question 10

What is the primary use of arsenic in industry?

Answer 10

As a semiconductor and in alloys

Question 11

Which element in group 15 is known for its role in organic chemistry as a building block for amino acids?

Answer 11

Nitrogen

Question 12

Fill in the blank: The element ______ is commonly found in the mineral orpiment.

Answer 12

Arsenic

Question 13

Which group 15 element is primarily obtained from the mineral galena?

Answer 13

Lead (though not a group 15 element, lead is often discussed in relation to arsenic mining from galena)

Question 14

What is the most toxic group 15 element?

Answer 14

Arsenic

Question 15

Which group 15 element is used in the production of semiconductors?

Answer 15

Antimony

Question 16

True or False: Bismuth is a highly toxic element.

Answer 16

False

Question 17

What is the primary use of bismuth in medicine?

Answer 17

As a treatment for gastrointestinal issues

Question 18

Which group 15 element is essential for the production of DNA and RNA?

Answer 18

Nitrogen

Question 19

What is the occurrence of nitrogen in the Earth’s atmosphere?

Answer 19

About 78% by volume

Question 20

Fill in the blank: The element ______ is often used in flame retardants.

Answer 20

Antimony

Question 21

Which group 15 element is primarily extracted from the mineral stibnite?

Answer 21

Antimony

Question 22

What is the primary form of nitrogen found in fertilizers?

Answer 22

Ammonium (NH4+) or Nitrate (NO3-)

Question 23

True or False: Nitrogen can form compounds with all elements except noble gases.

Answer 23

True

Question 24

Which element in group 15 is often used as a doping agent in electronics?

Answer 24

Phosphorus

Question 25

Which group 15 element is known for its use in the production of alloys and flame retardants?

Answer 25

Antimony

Question 26

What is the main environmental concern associated with arsenic?

Answer 26

Contamination of groundwater

Question 27

Which group 15 element has been used as a pigment in cosmetics historically?

Answer 27

Arsenic

Question 28

The first two elements are mainly metals or nonmetals

Answer 28

Non metals

Question 29

Then another to metals are metals or nonmetals

Answer 29

They are metalloids baka!!!