Answer
Verified
360.6k+ views
Hint To find the number of valence electrons in oxygen atom , you should first know that how many electrons are present in oxygen and then, calculate the total number of electrons present in the s, p and d-orbitals to get the valence electrons. Now you can easily answer the statement.
Complete step by step answer:
Oxygen is a non-metal and a gas which comes under the category of chalcogens and belongs to the p-block elements of the periodic table.
It lies in the 16th group and 2nd period of the periodic table.
It has an atomic number as 8 and a mass number as 16. It has the electronic configuration as: $1{{s}^{2}}2{{s}^{2}}2{{p}^{4}}$.
Now considering the statement as;
The number of electrons present in an atom is always equal to the atomic number of that very element.
And The electrons which are present in the outermost valence shell of an atom are called the valence electrons.
From the electronic configuration of the oxygen atom, we come to know that the number of electrons present in the outermost shell i.e., 2rd shell is 6 electrons.
Thus, the total number of valence electrons present in an oxygen atom is six.
Note: Oxygen being a chalcogen has six electrons in its outermost shell and requires only two electrons to complete its octet. So, oxygen has a strong tendency to gain two electrons from the other electron donating species and thus, it acts as a strong Lewis acid.
Complete step by step answer:
Oxygen is a non-metal and a gas which comes under the category of chalcogens and belongs to the p-block elements of the periodic table.
It lies in the 16th group and 2nd period of the periodic table.
It has an atomic number as 8 and a mass number as 16. It has the electronic configuration as: $1{{s}^{2}}2{{s}^{2}}2{{p}^{4}}$.
Now considering the statement as;
The number of electrons present in an atom is always equal to the atomic number of that very element.
And The electrons which are present in the outermost valence shell of an atom are called the valence electrons.
From the electronic configuration of the oxygen atom, we come to know that the number of electrons present in the outermost shell i.e., 2rd shell is 6 electrons.
Thus, the total number of valence electrons present in an oxygen atom is six.
Note: Oxygen being a chalcogen has six electrons in its outermost shell and requires only two electrons to complete its octet. So, oxygen has a strong tendency to gain two electrons from the other electron donating species and thus, it acts as a strong Lewis acid.
Recently Updated Pages
Basicity of sulphurous acid and sulphuric acid are
Three beakers labelled as A B and C each containing 25 mL of water were taken A small amount of NaOH anhydrous CuSO4 and NaCl were added to the beakers A B and C respectively It was observed that there was an increase in the temperature of the solutions contained in beakers A and B whereas in case of beaker C the temperature of the solution falls Which one of the following statements isarecorrect i In beakers A and B exothermic process has occurred ii In beakers A and B endothermic process has occurred iii In beaker C exothermic process has occurred iv In beaker C endothermic process has occurred
What is the stopping potential when the metal with class 12 physics JEE_Main
The momentum of a photon is 2 times 10 16gm cmsec Its class 12 physics JEE_Main
How do you arrange NH4 + BF3 H2O C2H2 in increasing class 11 chemistry CBSE
Is H mCT and q mCT the same thing If so which is more class 11 chemistry CBSE
Trending doubts
Difference Between Plant Cell and Animal Cell
Difference between Prokaryotic cell and Eukaryotic class 11 biology CBSE
How do you solve x2 11x + 28 0 using the quadratic class 10 maths CBSE
Select the correct plural noun from the given singular class 10 english CBSE
What organs are located on the left side of your body class 11 biology CBSE
The sum of three consecutive multiples of 11 is 363 class 7 maths CBSE
What is the z value for a 90 95 and 99 percent confidence class 11 maths CBSE
Fill the blanks with the suitable prepositions 1 The class 9 english CBSE
How many squares are there in a chess board A 1296 class 11 maths CBSE