the condition that one root of x square + bx + c is equal to zero maybe 4 times of other
Answers
Step-by-step explanation:
Let α and β be the roots of the following equation.
It is given that α=2β
α+β=3β=−
a
b
...(i)
αβ=2β
2
=
a
c
...(ii)
Therefore (
9a
2
b
2
)=
2a
c
⇒2b
2
=9ac
Answer:
ap mare GF bano gi
Step-by-step 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