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An element X belongs to 3rd period and g...

An element `X` belongs to 3rd period and group 2 of the periodic table. State:
(a) number of valence electrons (b) valency (c) metal or non-metal (d) name of the element

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The correct Answer is:
(a) 2 (b) 2 (c) Metal (d) Magnesium
NA
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LAKHMIR SINGH & MANJIT KAUR-PERIODIC CLASSIFICATION OF ELEMENTS-Exercise
  1. In the each of the following pairs, choose the atom having the bigger ...

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  2. The atomic numbers of three elements A,B and C are given below: Elem...

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  3. An element X belongs to 3rd period and group 2 of the periodic table. ...

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  4. The following diagram shows a part of the periodic table in which the ...

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  5. An element X is in group of the periodic table: (a) What will be the...

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  6. An element Y is in second period and group 16 of the periodic table: ...

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  7. (a) An element X has mass number 40 and contains 21 neutrons in its at...

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  8. An element X combines with oxygen to form an oxide XO. This oxide is e...

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  9. An element A has an atomic number of 6. Another element B has 17 elect...

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  10. The elements A,B,C and D belong to groups 1,2,14 and 17 respectively o...

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  11. An element X from group 2 reacts with element Y from group 16 of the p...

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  12. A metal X is in the first group of the periodic table. What will be th...

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  13. An element A from group 14 of the periodic table combines with an elem...

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  14. An element X from group 2 of the periodic table reacts with an elemen...

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  15. The following diagram shows a part of the periodic table containing f...

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  16. The elements A,B and C belong to groups 1,14 to 17 respectively of the...

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  17. Find the neutral atom in the periodic table which has the same number ...

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  18. Write the names and symbols of two very reactive metals belonging to g...

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  19. The non-metal A is an important constituent of our food and most of th...

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  20. A non metal X which is the largest constituent of air combines with hy...

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