How do electronic configurations of elements change in second period of periodic table with increase in atomic numbers?

Academic Chemistry NCERT Class 10

The electronic configurations of elements change in the second period of the periodic table with the increase in atomic numbers is given below:

Elements	Li(3)	Be(4)	B(5)	C(6)	N(7)	O(8)	F(9)	Ne(10)
Electronic configuration	2,1	2,2	2,3	2,4	2,5	2,6	2,7	2,8

Tutorialspoint

Simply Easy Learning

Updated on: 10-Oct-2022

21 Views

(a) What is a period in a periodic table? How do atomic structures (electron arrangements) change in a period with increase in atomic numbers from left to right?(b) How do the following change on going from left to right in a period of the periodic table? (i) Chemical reactivity of elements (ii) Nature of oxides of elements Give examples in support of your answer.
How do the atomic radii of elements change as we go from left to right in a period of the periodic table?
How many metals are present in second period of periodic table?
How does the valency of elements change on moving from left to right in the third period of the periodic table?
How does the number of valence electrons vary on moving from left to right:(i) In the first period of the periodic table? (ii) In the second period of the periodic table?
(a) How does the electropositive character of elements change on going down in a group of the periodic table?(b) State how the valency of elements varies (i) in a group, and (ii) in a period, of the periodic table.
Which of the following statement is correct in regard to the classification of elements ?(a) Elements in the periodic table are arranged on the basis of increasing atomic masses (b) Elements in Mendeleev’s periodic table are arranged on the basis of increasing atomic numbers (c) In modern periodic table, the element nickel of lower atomic mass is kept before the element cobalt of higher atomic mass (d) In modern periodic table, the isotopes of chlorine having diffrenet atomic masses are kept in the same group.
What is the atomic number of element of period 3 and group 17 of the Periodic Table?1041721
Electronegativity of Elements in Modern periodic Table
How does the metallic character of elements change along a period of the periodic table from the left to the right and why?
According to Mendeleev’s Periodic Law, the elements were arranged in the periodic table in the order of(a) increasing atomic number(b) decreasing atomic number(c) increasing atomic masses(d) decreasing atomic masses
(a) What is the main characteristic of the last elements in the periods of the periodic table? What is the general name of such elements?(b) What is the number of elements in: (a) 1st period, and (b) 3rd period, of the modern periodic table?
Name of 118 elements in the periodic table.
Atomic number of a few elements are given below 10, 20, 7, 14(a) Identify the elements(b) Identify the Group number of these elements in the Periodic Table(c) Identify the Periods of these elements in the Periodic Table(d) What would be the electronic configuration for each of these elements?(e) Determine the valency of these elements.
Nitrogen (atomic number 7) and phosphorus (atomic number 15) belong to group 15 of the periodic table. Write the electronic configuration of these two elements. Which of these will be more electronegative? Why?

Kickstart Your Career

Get certified by completing the course

Get Started