The following table shows the position of five elements A, B, C, D , E and F in
the modern periodic table.
Group
------>
Period
1 2 3-12 13 14 15 16 17 18
2 A B C
3 D E F
On the basis of the above table, answer the following questions:
(a) Name the element which will form only covalent compounds.
(b) Which is the element with valency 1?
(c) Which element is a nonmetal with valency 2?
(d) Out of D and E,which has a bigger atomic radius ?
(e) Write the formula of the compound formed when D combines with B.
(f) Write the name given to the elements belonging to group 18?
Answers
Answered by
2
Answer:
ANSWER
a) E
b) D
c) B
d) The noble gases
e) D has bigger atomic radius.The atomic radius decreases in moving from left to right along a period.This is due to an increase in nuclear charge which tends to pull the electrons closer to the nucleus and reduces the size of the atom.
Answered by
2
Answer:
(A) element e - silicon
(b) hydrogen
(c) B element
(D) D
(E) sorry i have not understand this
(F) helium,neon,argon,krypton,xenon,radon and oganesson
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