Question

Examine the block from the periodic table for the element nitrogen, chemical symbol N. Using your knowledge of the periodic table, which of these statements is correct about nitrogen? A) All Nitrogen atoms have 7 protons. B) The mass number of Nitrogen is 21. C) All Nitrogen atoms have 14 protons. D) Nitrogen atom has more protons than a Fluorine anion.

Answer 1

Answer: The correct answer is option A.

Explanation:

Nitrogen is the 7th element of our periodic table.

The electronic configuration of Nitrogen = $1s^22s^22p^3$

Number of electrons = 7

Atomic number is defined as the number of protons or electrons present in an atom.

As, the number of electrons present in nitrogen atom is 7, therefore the number of protons in nitrogen atom will also be 7.

Number of neutrons present in 1 nitrogen atom is 7.

Atomic mass is the sum of number of protons and neutrons present in an atom

Atomic mass of nitrogen = 7 + 7 = 14

Fluorine is the 9th element of the periodic table and the number of protons present in this element are 9.

From the above information, we conclude that the correct answer is option A.

Answer 2

I believe that the answer is A) All Nitrogen atoms have 7 protons