Advertisements
Advertisements
Question
State the number of elements in Period 1 of the Periodic Table.
Advertisements
Solution
Period 1 is the shortest period has 2 elements
RELATED QUESTIONS
The modern periodic table was prepared by ______.
What is a period in a periodic table?
Name two elements in halogens.
Name two elements in each case:
Transition element
Name the metals in the first twenty elements.
An element E has following electronic configuration:
|
K |
L |
M |
|
2 |
8 |
6 |
(a) To which group of the periodic table does element E belong?
(b) To which period of the periodic table does element E belong?
(c) State the number of valence electrons present in element E.
(d) State the valency of the element E.
How does number of (i) valence electrons (ii) valency; vary on moving from left to right in the second period of a periodic table?
Elements in the modern periodic table are arranged in ______groups and______ periods.
The three elements A, B and C with similar properties have atomic masses X, Y and Z respectively. The mass of Y is approximately equal to the average mass of X and Z. What is such an arrangement of elements called as? Give one example of such a set of elements.
Name the metalloids in the first twenty elements.
