Advertisements
Advertisements
प्रश्न
Give the symbol and valency of the following element and radical.
Ammonium
उत्तर
| Element/Radical | Symbol | Valency |
| Ammonium | NH4 | one |
APPEARS IN
संबंधित प्रश्न
Name the scientist who first of all showed that atomic number of an element is a more fundamental property than its atomic mass.
State modern periodic law.
Give two example of group 17 elements.
An element X belongs to 3rd period and group 2 of the periodic table. State:
(a) number of valence electrons
(b) valency
(c) metal or non-metal
(d) name of the element
Name two elements in Alkali metals.
In the Modern Periodic Table – atoms of all elements are arranged according to their increasing order of – atomic numbers. An atom of nitrogen has seven protons and seven electrons. State what would be its atomic number.
The groups 1 and 2 constitute the _______ block.
Which of the following statements about the Modern periodic table is correct?
Write an Explanation.
Period
Define periods of modern periodic table.
