Periodic Classification of Elements- 02

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Q1. Which of the following forms the basis of the Mendeleev's periodic table? *

1 point

Atomic mass

Number of nucleons

Atomic number

All of these

Q2. The elements A, B and C belong to group 2, 14 and 16 respectively, of the periodic table. Which of the two elements will form covalent bonds? *

1 point

A and B

C and A

B and C

None of these

Q3. What happens to the electronegativity of elements on moving from left to right in a periodic table? *

1 point

First increases than decreases

Increase

First decreases than increases

Decreases

Q4. Which of the following is the correct order of the atomic size of the elements oxygen, fluorine and nitrogen? *

1 point

F < O < N

O < F < N

N < F < O

O < N < F

Q5. What is the other name for group 17th elements? *

1 point

Noble gases

Alkali metals

Halogens

Alkali earth metals

Q6. Which of the following is the most reactive element of the group 16? *

1 point

Magnesium

Sodium

Oxygen

Fluorine

Q7. Element X forms a chloride with the formula XCl, which is a solid with a high melting point. X would most likely be in the same group of the Periodic Table as *

1 point

Q8. Which of the following does not increase while moving down the group of the periodic table? *

1 point

Atomic radius

Number of shells in the atom

Metallic character

Valence electrons

Q9. An element X belongs to the 3rd period and 1st group of the periodic table. What is the number of valence electrons in its atom? *

1 point

Q10. An element M is in group 13th of the periodic table, the formula for its oxide is *

1 point

M2O3

None of these

M3O2

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