periodic classification of elements Flashcards
1
Q
Q1- Vertical columns are called as - A) groups B) periods C) rows D) none
A
A
2
Q
Q2- How many groups are there in the periodic table? A) 18 B) 8 C) 28 D) 17
A
A
3
Q
Q3- Which group was added in Mendleev's periodic table? A) I group B) VIII group C) zero group D) V group
A
C
4
Q
Q4- What is the special name given to the 17th group? A) chalcogens B) halogens C) alkali metals D) inert gases
A
B
5
Q
Q5- Chalcogens are ? A) ore forming B) salt forming C) hydroxide forming D) None
A
A
6
Q
Q6- Atomic mass is equal to the sum of \_\_\_\_. A) P+N B) P+E C) Number of Protons D) Number of neutrons
A
A
7
Q
Q7- Name the most electronegative element of Periodic table ? A) Chlorine B) Bromine C) Fluorine D) Iodine
A
C
8
Q
Q8- Electron affinity is \_\_\_\_. A) always negative B) always positive C) can be negative or positive D) zero
A
C
9
Q
Q9- Ionisation energy is measured in - A) KJ/g B) J/mole C) KJ/mol D) none
A
C
10
Q
Q10- Out of Mg and Al which has higher ionisation energy? A) Mg B) Al C) Both have same D) None
A
B
11
Q
Q11- Write valency of Iron ? A) 2 B) 3 C) 0 D) 2,3
A
D
12
Q
Q12- Out of F and Cl, which has higher electron affinity ? A) Cl B) F C) Both have same D) none
A
A
13
Q
Q13- Upto which element, the law of octaves was found to be applicable - A) Oxygen B) Calcium C) Cobalt D) Potassium
A
B
14
Q
Q14- According to Mendeleev's Periodic law, the elements were arranged in Periodic table according to - A) Increasing atomic number B) decreasing atomic number C) Increasing atomic masses D) decreasing atomic masses
A
C
15
Q
Q15- In Mendeleev’s Periodic table, gaps were left for many elements. Pick any one out of them.
A) Germanium
B) Chlorine
C) Oxygen
D) Silicon
A
A
16
Q
Q16- What relation do Ar and Ca have? A) isotopes B) isoelectronic C) isobars D) isotones
A
C
17
Q
Q17- Isotopes possess - A) same number of Protons B) same number of neutrons C) same mass number D) none
A
A
18
Q
Q18- On which factor does ionisation energy depend? A) Size of an atom B) nuclear charge C) electronic configuration D) all
A
D
19
Q
Q19- Pick out the odd one - A) Argon B) neon C) Barium D) helium
A
C
20
Q
Q20- Which is biggest in size - A) Lithium B) sodium C) Magnesium D) potassium
A
D
21
Q
Q21- Which out of them is not a halogen? A) Fluorine B) Chlorine C) Iodine D) Germanium
A
D
22
Q
Q22- The standard element chosen for relative atomic mass is \_\_. A) Carbon-12 B) Hydrogen-1 C) chlorine -35 D) Iodine -121
A
A
23
Q
Q23- Electronegativity depends upon ? A) size of an atom B) nuclear charge on atom C) electrons in an atom D) all
A
D
24
Q
Q24- The order of ionisation of alkali group follows which order? A) Li>Na>K>Rb>Cs B) LiKCs C) LiNaRb ...
A
D
25
Q
Q25- Most electronegative element in group 2 is \_\_. A) Be B) Mg C) Al D) Ca
A
A
26
Q
Q26- Which of the given elements A,B,C,D and E with atomic numbers 2,3,7,10 and 30 belong to the same period? A) A,B,C B) B,C,D C) A,D,E D) B,D,E
A
B
27
Q
Q27- The elements A,B,C,D,E have atomic numbers 9, 11, 17, 12and 13. Which elements belong to the same group? A) A and B B) B and D C) A and C D) D and E
A
A
28
Q
Q28- Where would you locate the element with electronic configuration 2,8 in modern periodic table? A) group 8 B) group 2 C) group 18 D) group 16
A
C
29
Q
Q29- An element which is an essential constituent of all organic compounds belongs to \_\_\_. A) group 1 B) group 14 C) group 15 D) group16
A
B
30
Q
Q30- Which one will have the maximum number of valence electrons ? A) Na B) Al C) Si D) P
A
D
31
Q
Q31- What type of oxide would eka-Aluminium form ? A) EO₃ B) E₃O₂ C) E₂O₃ D) EO
A
C
32
Q
Q32- The element with atomic number 14 is hard and forms acidic oxide and a covalent halide . To which of the category does it belong? A) metal B) Metalloid C) Non metal D) Left hand side element
A
B
33
Q
Q33- The law of octaves is given by \_\_\_. A) Mendeleev B) Newlands C) Bohr D) Mosley
A
B
34
Q
Q34- The modern periodic table is given by \_\_\_\_. A) Mendeleev B) Newlands C) Bohr D) Mosley
A
C
35
Q
Q35- Which element was not known when Mendeleev proposed the classification? A) Hydrogen B) Sodium C) Copper D) Germanium
A
C
36
Q
Q36- Three elements B,Si and Ge are \_\_\_. A) Metals B) Non metals C) Metalloids D) Metal,non metal ,metalloid respectively
A
C
37
Q
Q37- Arrange the following elements in order of their increasing non metallic character Li,O,C,Be ,F?
A) F
A
C
38
Q
Q38- Arrange the following elements in order of their increasing metallic character Na,Si,Cl,Mg,Al ? A) Cl>Si>Al>Mg>Na B) Na>Mg>Al>Si>Cl C) Na>Al>Mg>Cl>Si D) Al>Na>Si>Ca>Mg
A
B
39
Q
Q39- Which of them doesn't loose electrons easily? A) Na B) F C) Mg D) Al
A
B
40
Q
Q40- Which will loose electron easily? A) Mg B) Na C) K D) Ca
A
C
41
Q
Q41- Which out of them has the biggest radii? A) Na B) Mg C) K D) Ca
A
C
42
Q
Q42- Which of the following gives the correct order of atomic radii of O, F and N? A) O,F,N B) N,F,O C) O,N,F D) F,O,N
A
D
43
Q
Q43- Which of the following, in their outermost shell has 2 valence electrons? A) K shell B) L shell C) M shell D) N shell
A
A
44
Q
Q44- Element X forms the chloride with the formula XCl2 ,which is a solid with a high melting point. X is most likely to be in the same group of periodic table as - A) Na B) Mg C) Al D) Si
A
B
45
Q
Q45- Which set out of them shows the correct sequence of metallic characters? A) Be ,Mg,Ca B) Na,Li,K C) Mg,Al,Si D) C,O,N
A
A
46
Q
Q46- On moving from left to right in a periodic table, size of an atom ? A) Increases B) Decreases C) Does not change D) First increases then decreases
A
B
47
Q
Q47- Which of the following elements will form acidic oxide? A) with atomic number 7 B) with atomic number 3 C) with atomic number 12 D) with atomic number 19
A
D
48
Q
Q48- Which statement is correct for left to right movement in periodic table?
A) elements become less metallic from left to right
B) number of valence electrons increases
C) atoms lose electrons easily
D) oxides become more acidic
A
C
49
Q
Q49- In periodic table, Helium is placed at \_\_\_ A) top left corner B) bottom right corner C) bottom left corner D) top right corner
A
D
50
Q
Q50- The number of electrons in valence shell is equal to - A) Atomic mass B) Group number C) period number D) Atomic volume
A
B
