The law of octaves stated by
a) Dobereiner b) Mendeleev c) Mosley d) Newland
2. Which arrangements of the following sets of atoms is in the order of
increasing atomic radius Na, Rb, K, Mg
a) Na, Mg, K, Rb b) Na, K, Mg, Rb c) Mg, Na, K, Rb d) Na, Mg, Rb, K
3. Mg2+ is isoelectronic with
a) Cu2+
b) Zn2+ c) Na+
d) Ca2+
4. The modern periodic law states that the physical and chemical
properties of the element are periodic functions of their
a)Atomic mass b) Atomic number c) No of nucleons d) All of the above
5. The properties of eka-aluminium predicted by Mendeleev are the same
as the properties of later discovered element
a) Sc b) Ge c) Ga d) Al
6. When XA>> XB , A-B bond is
a) Polar covalent b) Non-polar covalent c) Ionic d) Metallic
7. Which element has the greatest tendency to lose electrons
a) Chlorine b) Sulphur c) Francium d) Beryllium
8. Which of the following is correct order of size?
a) I
+> I-> I b) I-> I > I+
c) I > I+> I-
d) I > I-> I+
9. Silicon(14) belongs to class of
a) Metal b) Non – metal c) Metalloids d) Ionic compound
10.In the given shell the order of screening effect is
a)s>p>d>f b) s>p>f>d c) f>d>p>s d) f>p>s>d
11.Transition metals have the electronic configuration
a) ns2 nd1-10
b) ns2 np(n-1)d1-10 c) ns2
(n-1)d1-10 d) ns2np6
(n-1)d1-10
12.The electronic configuration of an element M is 2,8,4. In modern
periodic table, the element M is placed in
a)4
th group b) 2nd group c) 14th group d) 18th group
13.The half of the single bond length between two similar atoms covalently
bond in a molecule
a)Ionic radius b) covalent radius c) Atomic radius d) nuclear radius
Answers
Answered by
1
Answer:
1.d
2.c
3.c
4.b
5.c
6.a
7.c
8.d
9.c
10.a
11.c
12.a
13.b
Explanation:
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