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An element Y is in second period and gro...

An element `Y` is in second period and group 16 of the periodic table:
(i) Is it a metal or non-metal?
(ii) What is the number of valence electrons in its atom?
(iii) What is its valency?
(iv) What is the name of the element?
(v) What will be the formula of the compound formed by `Y` with sodium?

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The correct Answer is:
(i) Non metal (ii) 6 (iii) 2 (iv) Oxygen (v) `Na_(2)Y`
NA
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LAKHMIR SINGH & MANJIT KAUR-PERIODIC CLASSIFICATION OF ELEMENTS-Exercise
  1. The following diagram shows a part of the periodic table in which the ...

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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  18. Solid sodium bicarbonate was placed on a strip of pH paper. The colour...

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  19. When dilute hydrochloric acid is added to granulated zinc placed in a ...

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  20. When an aluminium strip is kept immersed in freshly prepared ferrous s...

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