Match the following species with their respec | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(A) To find the number of electrons in each species:$(a)$ $O^{2-}$: Oxygen has atomic number $8$. $O^{2-}$ has $8 + 2 = 10$ electrons. Thus,$(a)-(iii)

Vedclass · Accepted Answer

$a-iii, b-iv, c-ii, d-i$

Vedclass · Answer

(A) To find the number of electrons in each species:$(a)$ $O^{2-}$: Oxygen has atomic number $8$. $O^{2-}$ has $8 + 2 = 10$ electrons. Thus,$(a)-(iii)$.$(b)$ $Li^{2+}$: Lithium has atomic number $3$. $Li^{2+}$ has $3 - 2 = 1$ electron. Thus,$(b)-(iv)$.$(c)$ $He$: Helium has atomic number $2$. It has $2$ electrons. Thus,$(c)-(ii)$.$(d)$ $Ca^{2+}$: Calcium has atomic number $20$. $Ca^{2+}$ has $20 - 2 = 18$ electrons. Thus,$(d)-(i)$.Therefore,the correct match is $a-iii, b-iv, c-ii, d-i$.

Match the following species with their respective number of electrons:
| Species | Number of electrons |
| :--- | :--- |
| $(a)$ $O^{2-}$ | $(i)$ $18$ |
| $(b)$ $Li^{2+}$ | (ii) $2$ |
| $(c)$ $He$ | (iii) $10$ |
| $(d)$ $Ca^{2+}$ | (iv) $1$ |

Similar Questions

In the atom $_{13}Al^{27}$,the number of protons $(a)$,electrons $(b)$,and neutrons $(c)$ are present. Determine the ratio in the order $(c : b : a)$.

An atom having atomic mass number $13$ has $7$ neutrons. What is the atomic number of the atom?

In the two elements, ${ }_{Z_1} A^{M_1}$ and ${ }_{Z_2} B^{M_2}$, the following relations are true. $M_1 \neq M_2$ and $Z_1 \neq Z_2$ but $M_1-Z_1=M_2-Z_2$. These elements are ($M$ is atomic weight, $Z$ is atomic number)

Two atoms have the same atomic mass but different atomic numbers. Such atoms are called as:

What is the number of electrons in a neutral atom that has $20$ protons in its nucleus?

Vedclass Test Series

Exam Paper Generator

Online Exam Module

Match the following species with their respective number of electrons:| Species | Number of electrons || :--- | :--- || $(a)$ $O^{2-}$ | $(i)$ $18$ || $(b)$ $Li^{2+}$ | (ii) $2$ || $(c)$ $He$ | (iii) $10$ || $(d)$ $Ca^{2+}$ | (iv) $1$ |