1
TS EAMCET 2022 (Online) 18th July Morning Shift
MCQ (Single Correct Answer)
+1
-0

The correct order of the first ionisation enthalpies of the following elements is

A

$\mathrm{Li}<\mathrm{B}<\mathrm{Be}<\mathrm{N}$

B

$\mathrm{Li}<\mathrm{Be}<\mathrm{B}<\mathrm{N}$

C

$\mathrm{N}<\mathrm{Be}<\mathrm{B}<\mathrm{Li}$

D

$\mathrm{N}<\mathrm{B}<\mathrm{Be}<\mathrm{Li}$

2
TS EAMCET 2020 (Online) 14th September Evening Shift
MCQ (Single Correct Answer)
+1
-0

Arrange the following ions in the correct order with respect to their ionic radii.

A

$\mathrm{Br}^{-}>\mathrm{Cl}^{-}>\mathrm{Na}^{+}>\mathrm{Be}^{2+}$

B

$\mathrm{Be}^{2+}>\mathrm{Na}^{+}>\mathrm{Cl}^{-}>\mathrm{Br}^{-}$

C

$\mathrm{Cl}^{-}>\mathrm{Br}^{-}>\mathrm{Na}^{+}>\mathrm{Be}^{2+}$

D

$\mathrm{Na}^{+}>\mathrm{Be}^{2+}>\mathrm{Br}^{-}>\mathrm{Cl}^{-}$

3
TS EAMCET 2020 (Online) 14th September Morning Shift
MCQ (Single Correct Answer)
+1
-0

What is the correct order of atomic radius of $\mathrm{Al}, \mathrm{Na}, \mathrm{B}$ and Be ?

A

$\mathrm{Be}<\mathrm{Na}<\mathrm{Al}<\mathrm{B}$

B

$\mathrm{B}<\mathrm{Be}<\mathrm{Al}<\mathrm{Na}$

C

AI $<\mathrm{Be}<\mathrm{B}<\mathrm{Na}$

D

$\mathrm{Na}<\mathrm{Al}<\mathrm{B}<\mathrm{Be}$

4
TS EAMCET 2020 (Online) 11th September Evening Shift
MCQ (Single Correct Answer)
+1
-0

The basic difference in approach between Mendeleev's periodic law and modern periodic law is the change on the basis of classification of elements from

A

atomic number to atomic weight

B

atomic weight to atomic number

C

neutron number of atomic weight

D

electron number to atomic number

TS EAMCET Subjects

Browse all chapters by subject