2.
Two elements can never have identical line spectra because they have different
5.
In Thomson’s model electrons are ___
6.
¹⁴C, ¹⁵N, ¹⁶O are isotones because they all have ___ neutrons
7.
Line spectrum is used in
9.
CN⁻, CO, N₂, NO⁺ have ___ electrons each
10.
Isoelectronic species must have same ___
11.
Thomson’s model was rejected by ___
12.
Isotopes have the same ___
13.
Heaviest isotopes are generally ___
14.
In Thomson model, positive charge is ___
15.
Isomorphs share same ___
16.
Heavy isotopes are generally ___
17.
Thomson’s model assumes mass is ___
18.
Isotopes differ in ___
19.
Emission spectrum of atoms in gaseous phase appears as
20.
Isosters and isoelectronic species are ___
21.
Isobars differ in ___
22.
Species with same number of atoms & electrons are ___
23.
Isotopic effect is greater in ___
25.
Species with same isotopic number belong to ___
26.
Isoelectronic species must have same ___
27.
Isotopes can be separated by ___
28.
Absorption spectrum is formed when atoms
29.
F¹⁹ and K³⁹ are isodiaphers because both have ___
30.
In isobars, the sum of ___ remains same
31.
Isobars show different chemical properties because ___
32.
Line spectra of elements are identical because of
33.
Isodiaphers have same ___
34.
Rutherford disproved Thomson because ___
35.
The missing wavelengths in a continuous spectrum represent
36.
Absorption spectrum consists of
37.
Thomson’s model describes atom as ___
38.
Example of isotopes of carbon
39.
Isoelectronic species have same number of ___
40.
Which is an example of isomorphs?
41.
Emission and absorption lines of the same substance are found at
42.
A − 2Z constant defines ___
43.
Isotones have same ___
44.
Isotopes have same chemical properties because ___
45.
Line spectrum consists of
