.
Name the following
The
to water.
2.
Burning
The layer of air around the earth
occurs only in presence of
this gas
to
A
4. It gets added air by evaporation
and transpiration
fuly suspended magnet always
Answers
Answer:
join
Explanation:
What are the total number of orbitals with principle quantum number 3? Justify (2)
(ii) Differentiate between (3)
(a) Molecule of element and molecule of compound
(b) Diatomic molecule and poly atomic molecule
(iii) What is the position of followings in the periodic table, also give one example of each
(a) Alkali metals (b) Alkaline earth metals (2)
(c) Halogens (d) Noble gases
(iv) Give the example of each (2)
(a) A monoatomic cation (b) A mono atomic anion
(c) A poly atomic cation (d) A poly atomic anion
(v) Which of the following species has the most unpaired electrons? Justify (2)
S
+
, S or S
-
(vi) Identify the sub shell in which electrons with the following quantum numbers are
found?
(a) n = 2, l = 1 (b) n = 4, l = 2 (c) n = 6, l = 0 (3)
(vii) How you prove with experiment that electron has a spin? (2)
(viii) Justify that Al2O3 is amphoteric oxide
