Advertisements
Advertisements
Question
Name or state following with reference to the element of the first three periods of the periodic table.
A non-metal in period 2 which is tetravalent.
Advertisements
Solution
Tetravalent non-metal is carbon [C]
APPEARS IN
RELATED QUESTIONS
How does the number of valence electrons vary on moving from left or right in the second period of the periodic table?
The atomic numbers of the elements Na, Mg, K and Ca are 11, 12, 19 and 20 respectively. The element having the largest atomic radius is:
(a) Mg
(b) Na
(c) K
(d) Ca
Fill in the blank:
on moving from right to left in the second period, the number of valence electrons……….
Fill in the blank
There are ______ groups and ______ periods in the modern form of periodic table.
Explain, the statement 'In each period, the atomic radii gradually decrease with increase in atomic number'. Give one example to justify your answer.
Arrange the following as per instruction given in the bracket.
K, Pb, Ca, Zn (increasing reactivity)
The elements of one short period of the periodic table are given below in order from left to right:
| Li | Be | B | C | O | F | Ne |
To which period do these elements belong?
Name the period which is the shortest period of the periodic table.
State the property trends in general of elements on moving down in a group of the periodic table.
Select the correct answer from the options given below.
It is a period having elements from atomic no. 11 to 18.
