Jee 2014 Booklet2 Hwt Solutions Periodic Table

August 28, 2017 | Author: varunkohliin | Category: N/A
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Jee 2014 Booklet2 Hwt Solutions Periodic Table...

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Vidyamandir Classes

Solutions to Home Work Test/Chemistry Periodic Table

HWT - 1

5.(C)

Read NCERT

6.(B)

Check the positions of the given elements from periodic table and use the rules of size i.e. as we go across the periodic table size decreases and as we go down the periodic table size increases.

8.(C)

Fluorine is the most electronegative atom.

Periodic Table

HWT - 2

1.(B)

Electronic configuration with exactly half filled orbital have very high ionization energy.

4.(B)

Read NCERT (XIth) Page No. 315 (p-Block Elements)

5.(D)

Nitrogen has exactly half filled electrons which makes pulling an electron from it even more difficult than oxygen.

7.(A)

Lower the size of cation and higher the charge on it, more it its hydration energy.

10.(A)

Check the position of ‘Polonium’ in the periodic table. ‘Po’ shows +6, +4, +2, –2 states in general but majorly it shows +4 state. It is considered to be a metalloid with properties similar to Tellurium and Bismuth.

Periodic Table

HWT - 3

5.(B)

Read NCERT (XIIth)

6.(C)

Li  (g)  Na  (g)  K  (g) but Li  (aq.)  Na  (aq)  K  (aq.) (i.e. in aqueous medium the order reverses) You will understand this when you study electrochemistry in XIIth Class.

7.(D)

Though adding an electron to N–2 will also make it attain noble gas configuration but adding a third electron to the same atom without adding any protons is very difficult as the incoming third electrons will be highly repelled by the already present electrons. Converting O to O 2 will be the relatively easy.

Periodic Table

HWT - 4

3.(C)

If anions and cations have huge dissimilarly in their size then their lattice enthalpy will be low.

6.(D)

Read Inert Pair effect from NCERT XIth Unit-11 Page No. 307 Read XIth NCERT Unit – 3

9.(D)

Radii of transition elements remain nearly the same.

VMC/Periodic Table

16

HWT-Solutions/Chemistry

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