MEDIUM

Earn 100

A certain negative ion $X^{- 2}$ has in its nucleus $18$ neutrons and $18$ electrons in its extra nuclear structure. What is the mass number of the most abundant isotope of ' $X$ ' :

46.15% studentsanswered this correctly

Important Questions on Structure of Atom

EASY

Chemistry>Physical Chemistry>Structure of Atom>Atomic Number and Atomic Mass Number

Which of the following are isoelectronic species?

I. $\overset{+}{C} H_{3}$

II. ${NH}_{2}^{-}$

III. ${NH}_{4}^{+}$

IV. ${NH}_{3}$

EASY

Chemistry>Physical Chemistry>Structure of Atom>Atomic Number and Atomic Mass Number

B e^{2 +}

is isoelectronic with which of the following ions?

EASY

Chemistry>Physical Chemistry>Structure of Atom>Atomic Number and Atomic Mass Number

The number of protons, neutrons and electrons in

_{71}^{175} Lu

, respectively, are

EASY

Chemistry>Physical Chemistry>Structure of Atom>Atomic Number and Atomic Mass Number

The product obtained after a positron emission from

{}_{31}{Ga}^{68}

EASY

Chemistry>Physical Chemistry>Structure of Atom>Atomic Number and Atomic Mass Number

The isoelectronic pair is:

EASY

Chemistry>Physical Chemistry>Structure of Atom>Atomic Number and Atomic Mass Number

In the nuclear reaction

{}_{13}{Al}^{27} + {}_{2}{He}^{4} ⟶ {}_{14}X^{30} + {}_{1}H^{1}, X

EASY

Chemistry>Physical Chemistry>Structure of Atom>Atomic Number and Atomic Mass Number

Hydrogen has three isotopes

(A), (B)

and

(C) .

If the number of neutron(s) in

(A), (B)

and

(C)

respectively, are

(x), (y)

and

(z),

the sum of

(x), (y)

and

(z)

EASY

Chemistry>Physical Chemistry>Structure of Atom>Atomic Number and Atomic Mass Number

From the following pairs of ions which one is not an iso-electronic pair?

EASY

Chemistry>Physical Chemistry>Structure of Atom>Atomic Number and Atomic Mass Number

Among the following, the set of isoelectronic ions is

EASY

Chemistry>Physical Chemistry>Structure of Atom>Atomic Number and Atomic Mass Number

O^{2 -}

is isoelectronic with

EASY

Chemistry>Physical Chemistry>Structure of Atom>Atomic Number and Atomic Mass Number

In the following sets of ions, which one is not isoelectronic with the rest of the species?

EASY

Chemistry>Physical Chemistry>Structure of Atom>Atomic Number and Atomic Mass Number

Among the following species which option contains all isoelectronic species?

EASY

Chemistry>Physical Chemistry>Structure of Atom>Atomic Number and Atomic Mass Number

Which of the following elements you need to remove to form an isotone family ?

EASY

Chemistry>Physical Chemistry>Structure of Atom>Atomic Number and Atomic Mass Number

An element with mass number

181

contains

32 %

more neutrons as compared to protons. What is the symbol of that element?

HARD

Chemistry>Physical Chemistry>Structure of Atom>Atomic Number and Atomic Mass Number

Consider a hypothetical case in which the charge of a proton is twice as that of an electron. Using this hypothetical case, how many protons

(P),

neutrons

(N)

and electrons

(E)

would a neutral

{}^{23}{Na}

atom contain?

MEDIUM

Chemistry>Physical Chemistry>Structure of Atom>Atomic Number and Atomic Mass Number

The number of protons, neutrons and electrons in

{}_{6}^{13}C

respectively are

MEDIUM

Chemistry>Physical Chemistry>Structure of Atom>Atomic Number and Atomic Mass Number

The masses of an electron, a proton and a neutron respectively will be in the ratio

EASY

Chemistry>Physical Chemistry>Structure of Atom>Atomic Number and Atomic Mass Number

The isoelectronic set of ions is:

EASY

Chemistry>Physical Chemistry>Structure of Atom>Atomic Number and Atomic Mass Number

The pair of atoms having the same number of neutrons is

MEDIUM

Chemistry>Physical Chemistry>Structure of Atom>Atomic Number and Atomic Mass Number

Which of the following pairs of iron are isoelectronic and isostructural?

A certain negative ion X-2 has in its nucleus 18 neutrons and 18 electrons in its extra nuclear structure. What is the mass number of the most abundant isotope of 'X' :

Important Questions on Structure of Atom

Learn and Prepare for any exam you want !

A certain negative ion $X^{- 2}$ has in its nucleus $18$ neutrons and $18$ electrons in its extra nuclear structure. What is the mass number of the most abundant isotope of ' $X$ ' :