Advertisements
Advertisements
Question
The atom of an element X has 7 electrons in its M shell.
(a) Write the electronic configuration of element X.
(b) What is the atomic number of element X?
(c) Is it a metal or a non-metal?
(d) What type of ion will be formed by an atom of element X? Write the symbol of the ion formed.
(e) What could element X be?
Advertisements
Solution
(a) Electronic configuration of the element X is
Element X : \[{\underset{2}{\text{ K }}\underset{8}{\text{ L }}\underset{7}{\text{ M }}}\]
(b) Atomic number of the element X will be 17.
(c) Element X is a non-metal because there are 7 electrons in its outermost orbit. In order to complete its octet (to get 8 electrons), it will gain one electron. An element which gains electrons in order to complete its octet is a non-metal.
(d) The element will form an anion by gaining an extra electron in order to complete its octet.
Symbol of an ion of X will be X–.(e) X is Chlorine.
APPEARS IN
RELATED QUESTIONS
Summarize the rules for writing of distribution of electrons in various shells for the first eighteen elements.
From the Symbol `""_15^31"P"`, State : Electron Configuration of Phosphorus.
Draw a neat labelled diagram.
Diagramatic sketch of electronic configurations of magnesium (Atomic number 12)
Define the term of the electron.
The following element is given \[\ce{_9W}\]. State the electronic configuration and state whether it is a metal, non-metal, or inert gas.
The following element is given \[\ce{_18Y}\]. State the electronic configuration and state whether it is a metal, non-metal, or inert gas.
The following element is given \[\ce{_20Z}\]. State the electronic configuration and state whether it is a metal, non-metal, or inert gas.
State true or false. If false, correct the statement.
The maximum number of electron in L Shell is 10.
The electronic configuration of ‘Cl’ is ______.
Explain the electronic configuration of atoms with an illustration.
