Advertisements
Advertisements
Question
The atomic number of an element X is 13. What will be the number of electrons in its ion X3+ ?
Options
11
15
16
10
Solution
10
If the atomic number of X is 13, the number of electrons in its X3+ ion would be 13 – 3 = 10.
APPEARS IN
RELATED QUESTIONS
On what principle are the following methods of separation based? Give one example of a mixture for each of the methods mentioned in which they are used
Magnetic separation
Define atomic mass unit. What is its symbol ?
Elements are mainly classified into metals and non-metals. State six properties of metals which differ from non-metals.
Give the symbol of the following element:
Arsenic
State the type of element for the following:
Phosphorus
Give the symbol of the following element:
Nitrate
Write the radical of the following valency:
Oxygen
State the valency of the following metallic element and write symbol with the valency
Chromium
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).
Oxide
Write a note on Greem symbols.
