Q1- Which out of them has the biggest radii?
Q2- Vertical columns are called as –
Q3- Which of the following gives the correct order of atomic radii of O, F and N?
Q4- How many groups are there in the periodic table?
Q5- Which of the following, in their outermost shell has 2 valence electrons?
Q6- Which group was added in Mendleev’s periodic table?
Q7- 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 –
Q8- What is the special name given to the 17th group?
Q9- Which set out of them shows the correct sequence of metallic characters?
Q10- Chalcogens are ?
Q11- On moving from left to right in a periodic table, size of an atom ?
Q12- Atomic mass is equal to the sum of ____.
Q13- Which of the following elements will form acidic oxide?
Q14- Name the most electronegative element of Periodic table ?
Q15- Which statement is correct for left to right movement in periodic table?
Q16- Electron affinity is ____.
Q17- In periodic table, Helium is placed at ___
Q18- Ionisation energy is measured in –
Q19- The number of electrons in valence shell is equal to –
Q20- Out of Mg and Al which has higher ionisation energy?
Q21- Write valency of Iron ?
Q23- Upto which element, the law of octaves was found to be applicable –
Q24- According to Mendeleev’s Periodic law, the elements were arranged in Periodic table according to –
Q25- In Mendeleev’s Periodic table, gaps were left for many elements. Pick any one out of them.
Q26- What relation do Ar and Ca have?
Q27- Isotopes possess –
Q28- On which factor does ionisation energy depend?
Q29- Pick out the odd one –
Q30- Which is biggest in size –
Q31- Which out of them is not a halogen?
Q32- The standard element chosen for relative atomic mass is __.
Q33- Electronegativity depends upon ?
Q34- The order of ionisation of alkali group follows which order?
Q35- Most electronegative element in group 2 is __.
Q36- 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?
Q37- The elements A,B,C,D,E have atomic numbers 9, 11, 17, 12and 13. Which elements belong to the same group?
Q38- Where would you locate the element with electronic configuration 2,8 in modern periodic table?
Q39- An element which is an essential constituent of all organic compounds belongs to ___.
Q40- Which one will have the maximum number of valence electrons ?
Q41- What type of oxide would eka-Aluminium form ?
Q42- The element with atomic number 14 is hard and forms acidic oxide and a covalent halide . To which of the category does it belong?
Q43- The law of octaves is given by ___.
Q44- The modern periodic table is given by ____.
Q45- Which element was not known when Mendeleev proposed the classification?
Q46- Three elements B,Si and Ge are ___.
Q47- Arrange the following elements in order of their increasing non metallic character Li,O,C,Be ,F?
Q48- Arrange the following elements in order of their increasing metallic character Na,Si,Cl,Mg,Al ?
Q49- Which of them doesn’t loose electrons easily?
Q50- Which will loose electron easily?