Advertisements
Advertisements
प्रश्न
Name or state following with reference to the element of the first three periods of the periodic table.
The valency of the element in period 3 having atomic number 17.
उत्तर
Valency is 1 negative [−1]
APPEARS IN
संबंधित प्रश्न
Write the electronic configuration of K and Ne.
Write any one difference in the electronic configurations of group-1 and group-2 elements ?
An element with the atomic number 19 will most likely combine chemically with the element whose atomic number is ______.
Calculate the mass of Calcium that will contain the same number of the atom as are present in 3.2 gm of Sulphur.
[Atomic masses: S=32, Ca=40]
The elements A, B, C, D and E have atomic numbers 9, 11, 17, 12 and 13 respectively. The pair of elements which belongs to the same group of the periodic table is:
(a) A and B
(b) B and D
(c) A and C
(d) D and E
Name the element of lower nuclear charge out of Be and Mg.
Chorine in the periodic table is surrounded by the elements with atomic number 9, 16, 18 and 35.
Which is more electronegative than chlorine?
State whether the following statement is true or false
On moving horizontally across a period, number of valence electrons increases from one to eight.
An element A has 2 electrons in its fourth shell. State:
its valency
