- home
- SAT Discussions
- JEE Discussions
- NEET Discussions
- CBSE Discussions
- International Bacc..
- Explore
- COLLEGE & UNIVERSI..
- SAT Preparation
- SAT II
- KEAM Discussions
- MHT CET Discussion
Popular Questions
- Besides gallium, which other elements have since been discovered that
- What were the criteria used by Mendeleev in creating his periodic table?
- Why do you think noble gases are placed in a separate group?
- How could the modern periodic table remove various anomalies of Mendeleevs periodic table?
- Name two elements you would expect to show chemical reactions similar to magnesium.
- Name (i) three elements that have a single electron (ii) two elements that have two electrons (iii) three elements with filled ou..
- (i) Lithium, sodium and potassium are all metals that react with water (ii) Helium is an unreactive gas and neon is a gas
- In the modern periodic table, which are the metals among the first ten elements?
- By Considering their position in the periodic table, which one of the following
- Where would you locate the element with electronic configuration 2, 8 in the modern periodic table?
- Which of the following is the outermost shell for elements of period 2?
- Which one of the following elements exhibit maximum number of valence electrons?
- Which of the following statements is incorrect for atomic size?
- Select the correct pair that have largest and smallest atoms respectively
- What type of oxide would Eka-aluminium form?
- Which of the following property increases down the group?
- Assertion : Be, Mg and Ca can be classified Reason : Atomic mass of Mg is approximately
- Assertion : The elements of the same group Reason : The elements of the same group have the different number
- Assertion : Elements of group 16 are monovalent. Reason : Elements of group 16 have seven electrons
- Assertion : Noble gases are also called inert gases. Reason : Noble gases have a complete octet
- Assertion : Electronegativity of flourine is Reason : The electronegativity of the elements increases
- What is meant by periodicity in properties of elements with reference to periodic table?
- Write the atomic numbers of two elements X and Y having electronic configuration 2,8,2 and 2,8,6 respectively.
- Account for the following: Elements of group 17 are monovalent
- Account for the following: Elements of group 18 are called zerovalent
- Elements A, B, C and D have atomic numbers 1, 8, 11 and 19 respectively
- Out of the two elements x and y which has bigger atomic radius?
- Out of two elements, potassium and sodium, which one can lose electron easily? Give reason for your answer
- Where would you locate the element with electronic configuration 2, 8 in the modern periodic table?
- Write the correct increasing order of the atomic radii of O, F and N.
- Which group of elements will form an acidic oxide?
- The element with atomic number 14 is hard and forms acidic oxide and a covalent halide.
- Give an account of the process adopted by Mendeleev for the clarification of elements. How did he arrive at "periodic law"?
- Hydrogen occupies a unique position in modern periodic table, justify the statement.
- (i) Name the element with atomic number 7 (ii) To which group does it belong? (iii) To which period does it belong? (iv) Write its..
- Atomic number of three elements X,Y and Z are given below
- Which of the following elements belong to (i) same period? (ii) same group Explain giving reason.
- (i) How does electronic configuration of an atom (ii) which element has a total of three shells
- Taking the example of an element of atomic number =16,
- (i) What term can be used for (ii) Give the names of the metalloids (iii) In which groups of the periodic table
Popular Questions
- Besides gallium, which other elements have since been discovered that
- What were the criteria used by Mendeleev in creating his periodic table?
- Why do you think noble gases are placed in a separate group?
- How could the modern periodic table remove various anomalies of Mendeleevs periodic table?
- Name two elements you would expect to show chemical reactions similar to magnesium.
- Name (i) three elements that have a single electron (ii) two elements that have two electrons (iii) three elements with filled ou..
- (i) Lithium, sodium and potassium are all metals that react with water (ii) Helium is an unreactive gas and neon is a gas
- In the modern periodic table, which are the metals among the first ten elements?
- By Considering their position in the periodic table, which one of the following
- Where would you locate the element with electronic configuration 2, 8 in the modern periodic table?
- Which of the following is the outermost shell for elements of period 2?
- Which one of the following elements exhibit maximum number of valence electrons?
- Which of the following statements is incorrect for atomic size?
- Select the correct pair that have largest and smallest atoms respectively
- What type of oxide would Eka-aluminium form?
- Which of the following property increases down the group?
- Assertion : Be, Mg and Ca can be classified Reason : Atomic mass of Mg is approximately
- Assertion : The elements of the same group Reason : The elements of the same group have the different number
- Assertion : Elements of group 16 are monovalent. Reason : Elements of group 16 have seven electrons
- Assertion : Noble gases are also called inert gases. Reason : Noble gases have a complete octet
- Assertion : Electronegativity of flourine is Reason : The electronegativity of the elements increases
- What is meant by periodicity in properties of elements with reference to periodic table?
- Write the atomic numbers of two elements X and Y having electronic configuration 2,8,2 and 2,8,6 respectively.
- Account for the following: Elements of group 17 are monovalent
- Account for the following: Elements of group 18 are called zerovalent
- Elements A, B, C and D have atomic numbers 1, 8, 11 and 19 respectively
- Out of the two elements x and y which has bigger atomic radius?
- Out of two elements, potassium and sodium, which one can lose electron easily? Give reason for your answer
- Where would you locate the element with electronic configuration 2, 8 in the modern periodic table?
- Write the correct increasing order of the atomic radii of O, F and N.
- Which group of elements will form an acidic oxide?
- The element with atomic number 14 is hard and forms acidic oxide and a covalent halide.
- Give an account of the process adopted by Mendeleev for the clarification of elements. How did he arrive at "periodic law"?
- Hydrogen occupies a unique position in modern periodic table, justify the statement.
- (i) Name the element with atomic number 7 (ii) To which group does it belong? (iii) To which period does it belong? (iv) Write its..
- Atomic number of three elements X,Y and Z are given below
- Which of the following elements belong to (i) same period? (ii) same group Explain giving reason.
- (i) How does electronic configuration of an atom (ii) which element has a total of three shells
- Taking the example of an element of atomic number =16,
- (i) What term can be used for (ii) Give the names of the metalloids (iii) In which groups of the periodic table