Advertisements
Advertisements
Question
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?
Options
`""_15^13"X"`
`""_31^16"X"`
`""_16^15"X"`
`""_15^16"X"`
Advertisements
Solution
`""_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
RELATED QUESTIONS
Fill in the blank of the following statement :
Cathode rays are a beam of fast moving _________.
All the gases from cathode rays and anode rays when electricity is passed through them :What does the formation of cathode rays tell us about the atoms?
The subatomic particle called electron was discovered by :
An electron carries a ________ charge.
Which sub-atomic particle was discovered by Chadwick.
Name or state the following:
Ion formed by the gain of an electron(s)
What is the relation between the number of protons and the number of electrons in an atom?
The maximum number of electrons that can be present in the N shell is ______.
An atom has a number of orbits and each orbit has protons.
Helium has two electrons in the outermost orbit and so it is chemically inert.
