Question

elements of the periodic table

1. which element is number 16 on the periodic table?

sulfur

1. what is the element symbol for sodium?

na

1. how many protons are in an element of zinc?

30

1. what is the atomic mass of carbon?

1. what is the name of the element with the symbol w?

1. what is the atomic number of rubidium?

1. how many electrons are in an atom of phosphorus?

1. which element has an atomic mass of 1313?

1. which elements name comes from the 8th planet?

1. how many protons are in an atom of bismuth?

Explanation:

To solve these questions, we refer to the periodic table and basic atomic structure knowledge:

Question 13:

The element with atomic number 16 is Sulfur (S).

Question 14:

The element symbol for sodium is Na (from the Latin name Natrium).

Question 15:

The atomic number of zinc (Zn) is 30, and the number of protons equals the atomic number, so zinc has 30 protons.

Question 16:

The atomic mass of carbon (C) is approximately 12.01 (or 12, depending on rounding).

Question 17:

The element with the symbol W is Tungsten (from the German name Wolfram).

Question 18:

Rubidium (Rb) has an atomic number of 37.

Question 19:

Phosphorus (P) has an atomic number of 15, so a neutral phosphorus atom has 15 electrons (electrons = protons in a neutral atom).

Question 20:

The element with an atomic mass of ~131 is Xenon (Xe).

Question 21:

The 8th planet is Neptune, and the element named after Neptune is Neptunium (Np) – or Pluto was once considered the 9th, but Neptune is the 8th planet, so Neptunium is named after Neptune.

Question 22:

Bismuth (Bi) has an atomic number of 83, so a bismuth atom has 83 protons.

Answer:

s:

1. Sulfur
2. Na
3. 30
4. ~12.01 (or 12)
5. Tungsten
6. 37
7. 15
8. Xenon
9. Neptunium
10. 83