Advertisements
Advertisements
Question
Element X has electronic configurations 2, 8, 18, 8, 1. Without identifying X,
- Predict the sign and charge on a simple ion of X.
- Write if X will be an oxidizing agent or a reducing agent. Why?
Advertisements
Solution
a. X+
Reason - Since the element X has 1 electron in its valence shell. So, it will lose an electron and gain noble gas configuration. Therefore it forms a cation (X+). The sign is positive and the charge is 1 proton.
b. X will be a strong reducing agent as it has the tendency to donate its valence electron.
APPEARS IN
RELATED QUESTIONS
Fill in the blank of the following statement :
Cathode rays are a beam of fast moving _________.
Fill in the blanks of the following statements :
An atom has atomic mass number 23 and atomic number 11. The atom has_________ electrons.
Cathode rays are a beam of fast moving _________
The maximum number of electrons that can be accommodated in L shell are_________
The maximum number of electrons that can go into the M shell is _________
Explain the rule according to which electrons are filled in various energy levels.
An atom X has three electrons more than the noble gas configuration. What type of ion will it form?
The electronic configuration of fluoride ion is the same as that of the neon atom. What is the difference between the two?
Choose the correct option:
The mass number of an atom whose unipositive ion has 10 electrons and 12 neutrons is :
Choose the correct answer from A, B, C and D:
When a metal atom becomes an ion:
Give a simple diagram to show the arrangement of the electrons in an atom of sulphur.
Explain in brief the experimental proof which led to the discovery of –
Electrons
What are the noble gases?
