Classification of Elements and Periodicity in Properties Test

Question 1
1 / -0

Which of the following element will show almost same reactivity like $$Ca$$ ?

A
$$Cr$$

B
$$Mn$$

C
$$Sc$$

D
$$Na$$

Question 2
1 / -0

Which of the following does not represent the correct order of the properties indicated?

A
$$O^{-2} > Ne > Mg^{2+} > Al^{3+}$$ (Size)

B
$$N^{3-} > O^{2-} < F^- < Na^+$$ (Nuclear charge)

C
$$Li > Be > B > C$$ (Electron gain enthalpy)

D
$$Li < Na > K > Cs $$ (IE)$$_1$$

Question 3
1 / -0

What is the IUPAC symbol of Rutherfordium?

A
Rt

B
Ru

C
Rf

D
Rd

Question 4
1 / -0

What is the atomic number of the element with symbol Uus?

A
117

B
116

C
115

D
114

Question 5
1 / -0

For the properties mentioned, the correct trend for the different species is :

A
inert pair effect - $$Al > Ga > In$$

B
first ionization enthalpy - $$B > Al > Tl$$

C
strength as Lewis acid - $$B{ Cl }_{ 3 } > Al{ Cl }_{ 3 } > Ga{ Cl }_{ 3 }$$

D
oxidising property - $${ Al }^{ +3 } > { In }^{ +3 } > { Tl }^{ +3 }$$

Question 6
1 / -0

An element with atomic number $$17$$ is placed in the group $$17$$ of the long from periodic table. Element with atomic number $$9$$ is placed above and with atomic number $$35$$ is placed below it. Element with atomic number $$16$$ is placed left and with atomic number $$18$$ is placed right to it. Which of the following statements are correct?

a) Valency of the element with atomic number $$18$$ is zero.

b) Elements with same valency will have atomic number $$16$$, $$17$$ and $$18$$.

c) Valency of element with atomic number $$9$$, $$17$$ and $$35$$ is one.

d) Element with atomic number $$17$$ is more electronegative than element with atomic number $$16$$ and $$35$$.

A
(a), (b) and (c)

B
(a), (c) and (d)

C
(b), (c) and (d)

D
(a), (b) and (d)

Question 7
1 / -0

Group $$15$$ elements have more electron gain enthalpy than group $$16$$ elements. The correct reason for this is:

A
half-filled stability of gp. $$15$$ elements

B
poor shielding in gp. $$15$$ elements

C
poor shielding in gp. $$16$$ elements

D
half-filled stability of gp. $$16$$ elements

Question 8
1 / -0

Which of the following atoms should have the highest 1st electron affinity?

A
$$F$$

B
$$O$$

C
$$N$$

D
$$Cl$$

Question 9
1 / -0

The spin only magnetic moment of $$[ZCl_{4}]^{2-}$$ is $$3.87\ BM$$ where $$Z$$ is:

A
$$Mn$$

B
$$Ni$$

C
$$Co$$

D
$$Cu$$

Question 10
1 / -0

What is the electronic configuration of neutral $$Mg$$ and $$Cl$$ ?

A
$$Mg ; [Ne]3s^2$$ ; $$Cl : [Ne]3s^2 3p^5$$

B
$$Mg ; [Ne]3s^1$$ ; $$Cl : [Ne]3s^2 3p^5$$

C
$$Mg ; [Ne]3s^2$$ ; $$Cl : [Ne]3s^2 3p^4$$

D
$$Mg ; [Ne]3s^2$$ ; $$Cl : [Ne]3s^2 3p^6$$

Submit Test

Classification ...

Question 1

$$Cr$$

$$Mn$$

$$Sc$$

$$Na$$

Question 2

$$O^{-2} > Ne > Mg^{2+} > Al^{3+}$$ (Size)

$$N^{3-} > O^{2-} < F^- < Na^+$$ (Nuclear charge)

$$Li > Be > B > C$$ (Electron gain enthalpy)

$$Li < Na > K > Cs $$ (IE)$$_1$$

Question 3

Rt

Ru

Rf

Rd

Question 4

117

116

115

114

Question 5

inert pair effect - $$Al > Ga > In$$

first ionization enthalpy - $$B > Al > Tl$$

strength as Lewis acid - $$B{ Cl }_{ 3 } > Al{ Cl }_{ 3 } > Ga{ Cl }_{ 3 }$$

oxidising property - $${ Al }^{ +3 } > { In }^{ +3 } > { Tl }^{ +3 }$$

Question 6

(a), (b) and (c)

(a), (c) and (d)

(b), (c) and (d)

(a), (b) and (d)

Question 7

half-filled stability of gp. $$15$$ elements

poor shielding in gp. $$15$$ elements

poor shielding in gp. $$16$$ elements

half-filled stability of gp. $$16$$ elements

Question 8

$$F$$

$$O$$

$$N$$

$$Cl$$

Question 9

$$Mn$$

$$Ni$$

$$Co$$

$$Cu$$

Question 10

$$Mg ; [Ne]3s^2$$ ; $$Cl : [Ne]3s^2 3p^5$$

$$Mg ; [Ne]3s^1$$ ; $$Cl : [Ne]3s^2 3p^5$$

$$Mg ; [Ne]3s^2$$ ; $$Cl : [Ne]3s^2 3p^4$$

$$Mg ; [Ne]3s^2$$ ; $$Cl : [Ne]3s^2 3p^6$$

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