Home
Class 7
CHEMISTRY
If a uninegative ion has 10 neutrons and...

If a uninegative ion has 10 neutrons and 9 protons , electronic configuration of the atom of the element is

A

2, 8, 1

B

2,7

C

2,8

D

2, 8, 8

Text Solution

Verified by Experts

The correct Answer is:
b
`X^(-)= 9` protons (Z)
10 neutrons
10 neutrons
`{:(X overset( + 1e^(-1))toX^(-)),((9" electrons") (10 " electrons")):}`
Therefore, the electronic configuration of an atom is 2,7.
Promotional Banner

Similar Questions

Explore conceptually related problems

An element has atomic number 37 the electronic configuration of the element is

An atom of an element contains "29" electrons and "35" neutrons. The electronic configuration of the element is

An atom of element X contains 3 protons, 3 electrons and 4 neutrons: Write the electronic configuration of the element

The mass number of a particular element which has equal number of protons and neutrons is 32. What is the electronic configuration of the atom and its stable ion ?

An atom of an element contains 29 electrons and 35 netrons. Deduce a. The number of protons and b. The elctonic configuration of the element.

An atom of element E contains 3 protons, 3 electrons and 4 neutrons : (a) What is its atomic number ? (b) What is its mass number ? (c) Write the electronic configuration of the element E (d) State whether element E is a metal or non-metal. Why ? (e) What type of ion, cation of anion, will be formed by an atom of element E ? Why ? (f) Write the symbol of the ion formed by an atom of element E (g) What could element X be ?