Advertisements
Advertisements
प्रश्न
How do the atomic size and metallic character of elements vary as we move :-
(a) down a group and
(b) from left to right in a period
उत्तर
(a) The atomic size and metallic character of elements increase down a group.
(b) The atomic size and metallic character of elements decrease from left to right in a period.
APPEARS IN
संबंधित प्रश्न
Which element has twice as many electrons in its second shell as in its first shell?
An element with the atomic number 19 will most likely combine chemically with the element whose atomic number is ______.
Complete the following sentences
The similarities in the properties of a group of elements are because they have the same …………………
Name the element of lower nuclear charge out of Be and Mg.
Study the extract of the Periodic Table given below and answer the questions that follow. Give the alphabet corresponding to the element in question. DO NOT repeat an element. 
The ion of which element will migrate towards the cathode during electrolysis?
Arrange the following as per instruction given in the bracket.
K, Pb, Ca, Zn (increasing reactivity)
Arrange the following as per instruction given in the bracket.
Li, K, Na, H ( decreasing order of their potential ionisation )
(a) Fill in the blanks and rewrite the completed statements:
(i) ________ group in the periodic table contains elements that are all gases at room temperature.
(ii) Very fine particles mainly scatter ______ light.
Name the period which is the shortest period of the periodic table.
Name or state following with reference to the elements of the first three periods of the periodic table.
A metalloid in period 2 and in period 3.
