Classification of Elements and Periodicity in Properties — practice questions
91 curated practice questions from Classification of Elements and Periodicity in Properties (Chemistry Class 11, CBSE) — 91 easy. Every question includes the final answer free; step-by-step worked solutions with a free account.
- The electronic configuration of four atoms are given in brackets. L (1 s 2 2 s 2 2 p 1 ); M (1 s 2 2 s 2 2 p 5 ); Q (1…
- The period to which an element belongs to in the long form of periodic table represents
- What is the atomic number of the element which has 3 d 6 as its outermost configuration?
- Which of the following ions contains minimum number of unpaired electrons?
- To which group, an element with atomic number 120 will belong?
- Which group of elements shows lowest ionisation enthalpy?
- The correct order of acidic character of oxides in third period of periodic table is
- In the long form of periodic table, the non-metals are placed in
- Which of the following is not correct statement for periodic classification of elements?
- Which is the most non-metallic element among the following?
- Anything that influences the valence electrons will affect the chemistry of the element. Which one of the following…
- Part of the periodic table showing p -block is depicted below. What are the elements shown in the zig-zag boxes called?…
- Which of the following can most easily form unipositive gaseous ion?
- Which of the following halides is most easily oxidised?
- Which of the following statements is not correct about the electron gain enthalpy?
- Few elements are matched with their successive ionisation energies. Identify the elements. Element IE 1 (kJ/mol) IE 2…
- What were the main demerits of Mendeleev’s periodic table? (i) Hydrogen has been placed in group I though it resembled…
- In the following question, a statement of assertion is followed by a statement of reason. Mark the correct choice…
- Examples of elements belonging to s , p , d or f -block are given below. Identify the wrong example.
- Which is correct increasing order of their tendency of the given elements to form M 3– ion?
- K + and Cl – ions are isoelectronic. Which of the statements is not correct?
- Various oxidation states of few elements are mentioned. Which of the options is not correctly matched?
- Few values are given in the table in the direction from left to right and top to bottom. Predict the property which…
- There are many elements in the periodic table which exhibit variable valency. This is a particular characteristic of
- An element ‘ P ’ has atomic number 56. What will be the formula of its halide?
- The first element of the groups 1 and 2 are different from other members of the respective groups. Their behaviour is…
- What is common between given cations and anions, O 2– , F – , Na + , Mg 2+ , Al 3+ ?
- Ionisation enthalpy of nitrogen is more than oxygen because of
- Why is the electron gain enthalpy of O or F less than that of S or Cl?
- Why do noble gases have positive electron gain enthalpy?
- Match the column I with column II and mark the appropriate choice. Column I Column II (A) 3 d transition series (i) Z =…
- Which of the following groups contains metals, non-metals and metalloids?
- The element that does not show positive oxidation state is
- Which of the following have the same number of electrons in outermost shell?
- What is the order of successive ionisation enthalpies?
- The correct order of ionic radii of the following ions will be
- Electronic configurations of few elements are given below. Mark the incorrect match.
- Electronic configuration of four elements is given below. Which of the following does not belong to the same group?
- Which of the following elements will have highest second ionisation enthalpy?
- Atomic numbers of few elements are given below. Which of the pairs belongs to s -block?
- Predict the formula of stable compound formed by an element with atomic number 114 and fluorine.
- An element X belongs to fourth period and fifteenth group of the periodic table. Which one of the following is true…
- Fill in the blanks by picking the correct option. There are _________ groups and _________ periods in the extended form…
- A sudden large jump between the values of second and third ionization energies of an element would be associated with…
- Which of the following configurations represent the most electronegative element?
- The configuration of the valence orbital of an element with atomic number 22 is
- Which of the following is arranged in order of increasing metallic character?
- The electronic configuration of few elements is given below. Mark the statement which is not correct about these…
- There are two rows of inner-transition elements in the periodic table each containing 14 elements. The reason for this…
- Effective nuclear charge ( Z eff e ) for a nucleus of an atom is defined as
- Match the columns I, II and III and mark the appropriate choice. Column I Column II Column II (A) Bromine (i) Noble…
- The periodic table of today owes its development to two chemists namely
- Fill in the blanks with appropriate option. The ability of an atom to attract shared electrons to itself is called (i)…
- Elements in the same vertical group of the periodic table generally have same
- Which of the following is not a merit of Mendeleev’s periodic table?
- Match the atomic numbers given in column I with the block in which the element is placed in column II and mark the…
- Which of the following sets of oxides is amphoteric in nature?
- An element X has atomic number 19. What will be the formula of its oxide?
- The first ionisation enthalpy of the elements are in the order of
- Match the atomic numbers of the elements given in column I with the periods given in column II and mark the appropriate…
- Which of the following elements shown as pairs with their atomic numbers belong to the same period?
- What will be the order of decreasing reducing nature for the given metals?
- Given below are the names of few elements based on their position in the periodic table. Identify the element which is…
- Which atom ( X ) is indicated by the following configuration? X → [Ne] 3 s 2 3 p 3
- Which of the following will have lowest electron affinity?
- Which block of the periodic table contains elements with the general electronic configuration ( n – 2) f 1–14 ( n – 1)…
- Which of the following transitions will involve maximum amount of energy?
- In the given graph, a periodic property ( R ) is plotted against atomic numbers ( Z ) of the elements. Which property…
- The elements in which the electrons are progressively filled in 5 f -orbitals are called
- In which of the following, the order is not in accordance with the property mentioned.
- Few general names are given along with their valence shell configurations. Mark the incorrect name.
- Elements belonging to the same group of periodic table have
- Match the column I with column II and mark the appropriate choice. Column I (Atomic number) Column II (Period, Group)…
- Indicate the wrong statement on the basis of the periodic table.
- Few values of enthalpies are given below: O = – 141 kJ mol –1 , F = – 328 kJ mol –1 , S = – 200 kJ mol –1 , Cl = – 349…
- An element has the electronic configuration 1 s 2 2 s 2 2 p 6 3 s 2 3 p 6 3 d 8 4 s 2 . What will be its position in…
- In the periodic table, the maximum chemical reactivity is at the extreme left (alkali metals) and extreme right…
- Which of the following statements is true about the variation of density of elements in the periodic table?
- The main reason for showing anomalous properties of the first member of a group in s or p -block is
- Which of the following statements regarding the variation of atomic radii in the periodic table is not true?
- Which of the following elements will have highest ionisation energy?
- First and second ionisation enthalpies (in kJ/mol) of few elements are given. Element IE 1 IE 2 (i) 520 7300 (ii) 900…
- Which of the following configurations represents a noble gas?
- Among the elements with atomic numbers 9, 12, 16 and 36 which is highly electropositive?
- Which of the following statements regarding an anion is not true?
- Which of the following is not a periodic property for the elements?
- What is the name and symbol of the element with atomic number 112?
- As we move from left to right, the electronegativity increases. An atom which is highly electronegative has
- Beryllium has higher ionisation enthalpy than boron. This can be explained as,
- Which of the following arrangements represents the correct order of electron gain enthalpy?
- An element has atomic number 79. Predict the group and period in which the element is placed.