Two elements P and Q belongs to the same period of the modern periodic table and group are in Group 1 and Group 2 respectively. compare their following characteristic in tabular form
Answers the following questions
(a) The number of electrons in their atoms.
(b) The size of their atoms
(c) Their metallic characters
.
(D) Their tendencies to lose electrons
(e) The formula or their oxides
(f) The formula of their chloride
Answers
a)no of electrons increase as we go down the group
But they increase in a specific fashion down the group called as magic no's
2 8 8 18. 18 32
EgH. Li Na. K. Rb. Cs. Fr
1. 3. 11. 19. 37. 55. 87
2)size increases down the grp and decreases as we go left to right in a period
Size of grp 1 elements is more than grp two elements
3)alkali metals have weaker metallic bonds due to larger atomic size
alkali earth metals have stronger metallic bonds due to smaller
atomic size
4)grp 1 elements have higher tendency to loose electrons due to 1 electron in thier valence shell
Outer electronic configuration of grp 2 elements is ns2 which is stable so they have lower tendency to loose electrons
5)grp1
X. O. X2O
-1. -2
Grp2
X. O. XO
+2. -2
6) grp1
X. Cl. XCl
+1. -1
Grp2
X CL. XCl2
+2 -1
I hope this helps ( ╹▽╹ )
Answer:
Questions:-
Characteristic
(a) Number of electrons in their atoms
(b) The size of their atoms
(c) Their metallic characters
(d) Their tendency to lose electrons
(e) The formation of their oxides
(f) The formula of their chlorides
Answers:-
(a) P-
Valence electrons = 1
Q-
Valence electrons = 2
(b) "Don't know"
(c) P-
P is more metallic.
Q-
Q is less metallic than P.
(d) P-
Can easily lose electrons.
Q-
They will lose electrons easily but not as easily as alkali metals can.
(e) P-
React rapidly with oxygen in the air
4Na + O₂ → 2Na₂0
Q-
Less reactive than alkali metals.
(f) P-
NaCl, KCI, CSCI
Q-
MgCl₂, CaCl2, BaCl₂
Explanation: