Advertisements
Advertisements
Question
Choose the correct option
The number of valence electrons in O2- is :
Options
6
8
10
4
Solution
6
APPEARS IN
RELATED QUESTIONS
What is an electron? State its relative mass and charge.
The atom of an element X has 7 electrons in its M shell.
Is it a metal or a non-metal?
The atom of an element X has 7 electrons in its M shell.
What type of ion will be formed by an atom of element X? Write the symbol of the ion formed.
What could element X be?
Write down the electronic configuration of the following:
(a) `""_13^27"Y"`
(b) `""_17^35"Y"`
What are inert elements?
Choose the correct option:
The mass number of an atom whose unipositive ion has 10 electrons and 12 neutrons is :
Name or state the following:
A bond formed by transfer of electron(s)
Give a reason why noble gases have a stable electronic configuration.
The number of electrons in an element X is 15 and the number of neutrons is 16. Which of the following is the correct representation of the element?
Which of the following statement is always correct?
