Question

18. Electronic configuration of some elements is given in the table
below study and answer:
i
Name the elements Y and Z.
Element
Electronic configuration
1s 2s2p3s3p
X
Write the chemical nature of X
1s2s2p3s
Y
with reason.
1s2s 2p3s3p
Z
ii. What type of chemical bond is
formed while a molecule is formed by the combination of Y and Z?
iv. Write the balanced chemical equation for the reaction that takes
place between Y and Z. Also mention the type of the chemical
reaction.

Answer 1

Answer:

The arrangement of electrons in the orbitals of an atom is called the electron configuration of the atom. We describe an electron configuration with a symbol that contains three pieces of information (Figure 2):

The number of the principal quantum shell, n,

The letter that designates the orbital type (the subshell, l), and

A superscript number that designates the number of electrons in that particular subshell.

For example, the notation 2p4 (read “two–p–four”) indicates four electrons in a p subshell (l = 1) with a principal quantum number (n) of 2. The notation 3d8 (read “three–d–eight”) indicates eight electrons in the d subshell (i.e., l = 2) of the principal shell for which n = 3.