Question

1 When electron jumps in n is equal to one Orbit series of spectral line is called as
A Balmer series
B P fund series
C Bracket series
D Lyman series

2 In SO2 and SO3 the ratio of masses of oxygen which combined with a fixed mass of Sulphur is 2:3. This is an eg. of
A Constant proportion
B Multiple proportion
C Reciprocal proportion
D Gay Lussac

3 The ion tht is isoelectronic with CO is
A Cn-
B O2+
C O2
D N2+​

Answer 1

$\huge{\textbf{Answer:-}}$

1 When electron jumps in n is equal to one Orbit series of spectral line is called as

A Balmer series

B P fund series

C Bracket series

D Lyman series$\huge{\green{✓}}$

$\textbf{\green{Reason:-}}$

Lyman series can be defined as an electron jumps in n is equal to one Orbit series of spectral line.

____________________

2 In SO2 and SO3 the ratio of masses of oxygen which combined with a fixed mass of Sulphur is 2:3. This is an example of

A Constant proportion

B Multiple proportion$\huge{\green{✓}}$

C Reciprocal proportion

D Gay Lussac

$\textbf{\green{Reason:-}}$

Because as we know that the law of the multiple proportion states that elements form more than one compound between by reacting with each other, then the ratios of the masses of the second element which combine with a fixed mass of the first element will be ratios of small whole numbers. So, here SO2 and SO3 is examples of law of multiple proportion.

_____________________

3 The ion tht is isoelectronic with CO is

A Cn-$\huge{\green{✓}}$

B O2+

C O2

D N2+

$\textbf{\green{Reason:-}}$

CN- ion is the ion which is isoelectronic with CO.

Answer 2

Answer:

Answer:1}}}}}

The answer is lyman series. As We know that are 6 Series named Lyman, Balmer ,Paschen, Brackett, Pfound and humphrey. As first Orbit series is lyman series so electron first jump to the lyman series.

2}}}}}

This is the example of law of multiple proportion .

Law of multiple proportion :-)

Acc. to it when two elements combined to form two or more than two chemical compounds, then the mass of one element has simple whole number ratio or same .3}}}}}

The Ion that is isoelectronic with CO is CN- ion.

Isoelectronic series :-)

Series of atom or Ion with have different atomic number but have same number of electrons.

same number of electrons. ∆} ln the given question isoelectronic with CO ion will be CN- ion as both have equal number of electrons that is 14 electrones .