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.
Advertisements
उत्तर
Valency is 1 negative [−1]
APPEARS IN
संबंधित प्रश्न
From the following elements :
4Be; 9F; 19K; 20Ca
(i) Select the element having one electron is the outermost shell.
(ii) two elements of the same group.
Write the formula of and mention the nature of the compound formed by the union of 19K and element X(2, 8, 7).
An element with the atomic number 19 will most likely combine chemically with the element whose atomic number is ______.
Differentiate between Normal elements and Transition elements.
The element which has the maximum number of valence electrons is:
(a) Na
(b) P
(c) Si
(d) A
Fill in the blank:
on moving from right to left in the second period, the number of valence electrons……….
Name the element in period 3 which does not form oxide.
Choose the most appropriate answer from the following list of oxides which fit the description.
An amphoteric oxide.
Name and state the following with reference to the elements of the first three periods of the periodic table.
Valency of elements in Group 14 and 15.
Name or state following with reference to the elements of the first three periods of the periodic table.
The number of electron shells in elements of period 1, period 2, and period 3.
Name or state following with reference to the element of the first three periods of the periodic table.
The formula of the hydroxide of the element having electronic configuration 2, 8, 2.
