3. Classification of elements and periodicity in properties - Gujarat Board (GSEB) STD 11 Science Chemistry Questions

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01

M.C.Q (1 Marks)

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Sample Questions

3. Classification of elements and periodicity in properties questions

One sample from each question group in this chapter. Select any group above to see the full set with answer keys.

Q 1M.C.Q (1 Marks)1 Mark

Arrange the following elements in increasing order of first ionization enthalpy:

$\mathrm{Li}, \mathrm{Be}, \mathrm{B}, \mathrm{C}, \mathrm{N}$

Choose the correct answer from the options given below:

✓
$\mathrm{Li}<\mathrm{B}<\mathrm{Be}<\mathrm{C}<\mathrm{N}$
B
$\mathrm{Li}<\mathrm{Be}<\mathrm{C}<\mathrm{B}<\mathrm{N}$
C
$\mathrm{Li}<\mathrm{Be}<\mathrm{N}<\mathrm{B}<\mathrm{C}$
D
$\mathrm{Li}<\mathrm{Be}<\mathrm{B}<\mathrm{C}<\mathrm{N}$

Answer: A.

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Q 2M.C.Q (1 Marks)1 Mark

Arrange the following elements in increasing order of electronegativity:

$N, O, F, C, S i$

Choose the correct answer from the options given below:

A
$Si < C < O < N < F$
B
$O < F < N < C < Si $
C
$\mathrm{F}<\mathrm{O}<\mathrm{N}<\mathrm{C}<\mathrm{Si}$
✓
$Si < C < N < O < F $

Answer: D.

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Q 3M.C.Q (1 Marks)1 Mark

The $IUPAC$ name of an element with atomic number $119$ is $.........$

A
unnilennium
B
unununnium
C
ununoctium
✓
ununennium

Answer: D.

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Q 4M.C.Q (1 Marks)1 Mark

Identify the incorrect match :

Name $IUPAC$ Official Name

$(a)$ Unnilunium $(i)$ Mendelevium

$(b)$ Unniltrium $(ii)$ Lawrencium

$(c)$ Unnilhexlum $(iii)$ Seaborglum

$(d)$ Unununnium $(iv)$ Darmstadtium

✓
$(d),(iv)$
B
$(a),(i)$
C
$(b),$ $( ii )$
D
$(c),(iii)$

Answer: A.

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Q 5M.C.Q (1 Marks)1 Mark

For the second period elements the correct increasing order of first ionisation enthalpy is

A
$\mathrm{Li} < \mathrm{Be} < \mathrm{B} < \mathrm{C} < \mathrm{N} < \mathrm{O} < \mathrm{F} < \mathrm{Ne}$
✓
$\mathrm{L} < \mathrm{B} < \mathrm{Be} < \mathrm{C} < \mathrm{O} < \mathrm{N} < \mathrm{F} < \mathrm{Ne}$
C
$\mathrm{Li} < \mathrm{B} < \mathrm{Be} < \mathrm{C} < \mathrm{N} < \mathrm{O} < \mathrm{F} < \mathrm{Ne}$
D
$\mathrm{Li} < \mathrm{Be} < \mathrm{B} < \mathrm{C} < \mathrm{O} < \mathrm{N} < \mathrm{F} < \mathrm{Ne}$

Answer: B.

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