a) F & Cs
B) CI & Br C) O & S
D) N & C
Ans:
10. 'eka aluminium' is now known as 'Germanium'. Correct the statement if it
is wrong
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II. Answer the following questions.
8x1= 8M
11. Comment on the position of Hydrogen in modern periodic table.
Ans:
12. Arrange Carbon (c), Nitrogen (N) and Oxygen (0) in the decreasing order
of their ionization energy values.
Ans:
13. Write in two sentences about screening effect.
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14. By using Mendeleaf Periodic table predict the farmulae of oxide/oxides of
L & Mg.
Ans:
15. A, B, C are three elements of doberneir traids. If the atomic weight of Ai
7 and C is 39. What should be atomic weight of B.
Answers
Answered by
1
Answer:
wrong
Explanation:
eka aluminium - gallium
eka silicon - germanium
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