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.

The correct answer is option A.

Explanation:

Nitrogen is the 7th element of our periodic table.

The electronic configuration of Nitrogen =

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.

metals are good conductor of electricity. it has free electrons on their surface. according to electron pool theory, each atom present in a metal crystal losses all of its valence electron and as a result a pool of free is form. these pool of electrons are free to move and   conduct electricity easily   while making metal as good conductor.

the correct answer is a. the ability of electrons to flow throughout the metal.

if it's not useful, feel free to report for mistake in answer.

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