Advertisements
Advertisements
Question
Name or state following with reference to the element of the first three periods of the periodic table.
The non-metallic element present in period 3 other than sulphur and chlorine.
Advertisements
Solution
P [Phosphorus]
APPEARS IN
RELATED QUESTIONS
Use the letters only written in the Periodic Table given below to answer the questions that Follow:
- State the number of valence electrons in atom J.
- Which element shown forms ions with a single negative charge?
- Which metallic element is more reactive than R?
- Which element has its electrons arranged in four shells?
How does the valency of elements change of moving from left to right in the third period of the periodic table?
Five elements A, B, C, D and E have atomic numbers of 2, 3, 7, 10 and 18 respectively. The elements which belong to the same period of the periodic table are:
(a) A, B, C
(b) B, C, D
(c) A, D, E
(d) B, D, E
In each of the following pair, choose the atom having the bigger size:
(a) Mg (At. No.12) or Cl (At. No.17)
How does the number of:
valence electrons and
How do the following change on moving from left to right in a period of the periodic table?
Give examples in support of your answer.
atomic structure (electron arrangements) ?
An element X belong to 3rd periods and group II of the periodic table state:
the valency,
F, Cl and Br are the elements each having seven valence electrons. Which of these (i) has the largest atomic radius, (ii) is most reactive? Justify your answer, stating the reason for each.
Element P has atomic number 19. To which group and period, does P belong? Is it a metal or a non-metal? Why?
Name or state following with reference to the element of the first three periods of the periodic table.
A metal in period 3 having valency 3.
