Question

Complete the following table

Element	Atomic number$\left(\mathrm{Z}\right)$	Mass number$\left(\mathrm{A}\right)$	Number of protons	Number of electrons$\left(\mathrm{e}\right)$	Number of neutrons$\left(\mathrm{n}\right)$
$\mathrm{F}$

Answer 1

• The name of the element having symbol ($\mathrm{F}$) is Fluorine.
• The elemental representation of a given element ($\mathrm{F}$) = ${}_9{}^{19}\mathrm{F}$
• An atomic number of an element is usually written as a subscript on the left-hand side of the chemical symbol. It has the symbol “$\mathrm{Z}$”.
• The atomic number of Fluorine $=9$
• The atomic number of an atom equals to the total number of protons present in the nucleus of an atom.
• Number of protons of Fluorine$=9$
• In a neutral atom, the number of protons equals to the number of electrons.
• Number of electrons in Fluorine$=9$
• A mass number of an element is usually written as a superscript on the left-hand side of the chemical symbol. It has the symbol “$\mathrm{A}$”.
• A mass number of an atom is the total number of protons and neutrons present in the nucleus of an atom.
• The mass number of Fluorine $=19$
• Number of neutrons present in the atom = Mass number $-$ Atomic number
• The number of neutrons of Fluorine$=19-9=10$

Element	Atomic number$\left(\mathrm{Z}\right)$	Mass number$\left(\mathrm{A}\right)$	Number of protons	Number of electrons$\left(\mathrm{e}\right)$	Number of neutrons$\left(\mathrm{n}\right)$
$\mathrm{F}$	$9$	$19$	$9$	$9$	$10$