In Period 3 of the Periodic Table, element B is placed to the left to element A.

A. Element B would have (lower/higher/same) metallic character than A.

B. Element A would probably have (lesser/higher/same) number of shells than B.

C. Element A would have (greater/smaller/same) atomic size than B.

A. Lower, B. Same C. Greater

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A. Same, B. Same C. Smaller

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A. Higher, B. Higher C. Same

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A. Higher, B. Same C. Smaller

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Solution

The correct option is D A. Higher, B. Same C. Smaller

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Q. The electronegativities (according to Pauling) of the elements in period 3 of the periodic table are as follows. The elements are arranged in alphabetical order:

Al	Cl	Mg	Na	P	S	Si
1.5	3.0	1.2	0.9	2.1	2.5	1.8

(i) Arrange the elements in the order in which they occur in the periodic table from left to right. (The group 1 elements first, followed by the group 2 element and so on, up to group 7.)
(ii) Choose the word or phrase from the brackets which correctly completes each of the following statements:
(a) The element below sodium in the same group would be expected to have a _________ (lower/higher) electronegativity than sodium and the element above chlorine which would be expected to have a ________ (lower/higher) ionization potential than chlorine.
(b) On moving from left to right in a given period, the number of shells _________ (remains the same/increases/decreases).
(c) On moving down a group, the number of valence electrons __________ (remains the same/increases/decreases).

Choose the word or phrase from the brackets which correctly completes each of the following statements:-

(a) The element below sodium in the same group would be expected to have a ........... (lower/higher) electro-negativity than sodium and the element above chlorine would be expected to have a ............. (lower/higher) ionization potential than chlorine.

(b) On moving from left to right in a given period, the number of shells ...... (remains the same/ increases decreases).

(d) Metals are good ............. (oxidising agent/ reducing agent) because they are electron.......... (acceptors/donors).

Q. In Period 3 of the Periodic Table, element B is placed to the left to element A.

A. Element B would have (lower/higher/same) metallic character than A.

B. Element A would probably have (lesser/higher/same) valence electrons than B

C. Element A would have (greater/smaller/same) atomic size than B.

In period 3 of the periodic table, element B is placed to the left of element A. On the basis of this information, choose the correct word from the brackets to complete the following statements.
(i) The element B would have (lower/higher) metallic character than A.
(ii) The element A would probably have (lesser/ higher) electron affinity than B.
(iii) The element A would have (greater/smaller) atomic size than B.

Q. In Period

3

of the Periodic Table, element B is placed to the left of element A. On the basis of this information, choose the correct word from the brackets of complete the following statement.
(i) The element B would have(lower/higher) metallic character than A.
(ii) The element A would probably have(lesser/higher) electron affinity than B.
(iii) The element A would have(greater/smaller) atomic size than B.

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The correct option is D A. Higher, B. Same C. Smaller​

The correct option is D A. Higher, B. Same C. Smaller