Advertisements
Advertisements
प्रश्न
The anion of an element has ______.
विकल्प
more electrons than the normal atom
less electrons than the normal atom
more protons than the normal atom
same number of electrons as normal atom
Advertisements
उत्तर
The anion of an element has more electrons than the normal atom.
Explanation:
An anion is a negatively charged ion. It is formed when an atom gains one or more electrons. The number of protons remains the same, but electrons increase.
APPEARS IN
संबंधित प्रश्न
Give two examples of the following:
Solid + Liquid mixture
Match the metallic elements – with their correct symbols Metallic elements
| Metallic elements | Symbol |
| (a) Potassium | (1) Ca |
| (b) Sodium | (2) Zn |
| (c) Calcium | (3) Pb |
| (d) Magnesium | (4) Hg |
| (e) Zinc | (5) Cu |
| (f) Aluminum | (6) Au |
| (g) Iron | (7) K |
| (h) Lead | (8) Fe |
| (i) Copper | (9) Al |
| (j) Mercury | (10) Na |
| (k) Silver | (11) Mg |
| (l) Platinum | (12) Pt |
| (m) Gold | (13) Ag |
Match the formulas of the following of acids with their correct names:
Acids – (a) HCI (b) HNO3 (c) H2SO4 (d) H2CO3
Names – (1) Carbonic acid (2) Sulphuric acid (3) Hydrochloric acid (4) Nitric acid
In the chemical word equation –
Zinc + Sulphuric acid → Zinc sulphate + Hydrogen.
State the reactants and products of the above reaction. What does the arrow indicate?
State which element exists in the highest percentage in earth’s crust.
State the type of element for the following:
potassium
State the type of element for the following:
Boron
State the valency of the following metallic element and write symbol with the valency
Magnesium
State whether the following ion or radical given below of a non-metallic element exhibits valency: 1–, 2– or 3–. (write the ion or radical with the correct valency).
Nitrate
What is the expansion of IUPAC.
