Advertisements
Advertisements
प्रश्न
The number of electrons in an element X is 15 and the number of neutrons is 16. Which of the following is the correct representation of the element?
पर्याय
`""_15^13"X"`
`""_31^16"X"`
`""_16^15"X"`
`""_15^16"X"`
Advertisements
उत्तर
`""_15^13"X"`
Explanation -
Number of electrons = 15,
Number of neutrons = 16
Hence an atomic number of element X is 15 and the atomic mass is 31. Hence the element is represented as `""_15^13"X"`
APPEARS IN
संबंधित प्रश्न
Name the subatomic particle whose relative charge is : –1
The ion of an element has 3 positive charges. The mass number of atom of this element is 27 and the number of neutrons is 14. What is the number of electrons in the ion?
If an atom contains one electron and one proton, will it carry as a whole is neutral
What are inert elements?
Element X has electronic configurations 2, 8, 18, 8, 1. Without identifying X,
- Predict the sign and charge on a simple ion of X.
- Write if X will be an oxidizing agent or a reducing agent. Why?
Choose the correct option
The number of valence electrons in O2- is :
Write down the electronic configuration of the following
- 2713X,
- 3517Y.
Write down the number of electrons in X and neutrons in Y and the formula of the compound formed by X and Y.[XY3]
Atoms of all metals will have ______ electrons in their outermost orbit.
An atom has a number of orbits and each orbit has protons.
Select the INCORRECT statement.
