00. Atomic Number, Mass Number, Atomic Species
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Structure of Atom

238563 An ion with mass number 56 contains three units of positive charge and $30.4 \%$ more neutrons than electrons. The ion is

1 ${ }_{28}^{56} \mathrm{Ni}^{3+}$
2 ${ }_{26}^{56} \mathrm{Fe}^{3+}$
3 ${ }_{27}^{56} \mathrm{Co}^{3+}$
4 ${ }_{24}^{56} \mathrm{Cr}^{3+}$
COMEDK-2016
Structure of Atom

238564 Which of the following clement represents is isoelectronic sequence?

1 $\mathrm{N}, \mathrm{O}, \mathrm{F}, \mathrm{Ne}$
2 $\mathrm{Na}^{+}, \mathrm{Mn}^{2+}, \mathrm{Al}^{3+}, \mathrm{Si}^{4+}$
3 $\mathrm{Cl}^{-}, \mathrm{Ar}, \mathrm{Ca}^{2+}, \mathrm{Ti}^{4+}$
4 $\mathrm{Be}, \mathrm{Mg}^{2+}, \mathrm{Ca}, \mathrm{Si}^{2+}$
AP-EAMCET (Medical)
Structure of Atom

238562 The masses of an electron, a proton and a neutron respectively will be in the ratio -
#[Qdiff: Easy, QCat: Theory Based, examname: \mathrm{Na}, AP EAPCET 20.08.2021 Shift-I
, 25. In the following sets of ions, which one is not isoelectronic with the rest of the species? $\mathrm{O}^{2-}, \mathrm{F}^{-}, \mathrm{Mg}^{2+}, \mathrm{Al}^{3+}, \mathrm{Ne}$
,

1 $1836.15: 1838.68$
2 $1856.15: 1858.68$
3 $1834.15: 1836.68$
4 $1846.15: 1848.68$
Structure of Atom

238571 Observe the following statements regarding isotones:
I. ${ }^{39} \mathrm{~K}$ and ${ }^{40} \mathrm{Ca}$ are isotones.
II. Nuclides having different atomic (Z) and mass numbers (A) but same number of neutrons (n) are called isotones.
III. ${ }^{19} \mathrm{~F}$ and ${ }^{23} \mathrm{Na}$ are isotones. The correct answer is

1 1,2 and 3 are correct
2 Only 1 and 2 are correct
3 Only 1 and 3 are correct
4 Only 2 and 3 are correct
AP-EAMCET (Engg.)-2005
NEET DIGITAL LIBRARY
Structure of Atom

238563 An ion with mass number 56 contains three units of positive charge and $30.4 \%$ more neutrons than electrons. The ion is

1 ${ }_{28}^{56} \mathrm{Ni}^{3+}$
2 ${ }_{26}^{56} \mathrm{Fe}^{3+}$
3 ${ }_{27}^{56} \mathrm{Co}^{3+}$
4 ${ }_{24}^{56} \mathrm{Cr}^{3+}$
COMEDK-2016
Structure of Atom

238564 Which of the following clement represents is isoelectronic sequence?

1 $\mathrm{N}, \mathrm{O}, \mathrm{F}, \mathrm{Ne}$
2 $\mathrm{Na}^{+}, \mathrm{Mn}^{2+}, \mathrm{Al}^{3+}, \mathrm{Si}^{4+}$
3 $\mathrm{Cl}^{-}, \mathrm{Ar}, \mathrm{Ca}^{2+}, \mathrm{Ti}^{4+}$
4 $\mathrm{Be}, \mathrm{Mg}^{2+}, \mathrm{Ca}, \mathrm{Si}^{2+}$
AP-EAMCET (Medical)
Structure of Atom

238562 The masses of an electron, a proton and a neutron respectively will be in the ratio -
#[Qdiff: Easy, QCat: Theory Based, examname: \mathrm{Na}, AP EAPCET 20.08.2021 Shift-I
, 25. In the following sets of ions, which one is not isoelectronic with the rest of the species? $\mathrm{O}^{2-}, \mathrm{F}^{-}, \mathrm{Mg}^{2+}, \mathrm{Al}^{3+}, \mathrm{Ne}$
,

1 $1836.15: 1838.68$
2 $1856.15: 1858.68$
3 $1834.15: 1836.68$
4 $1846.15: 1848.68$
Structure of Atom

238571 Observe the following statements regarding isotones:
I. ${ }^{39} \mathrm{~K}$ and ${ }^{40} \mathrm{Ca}$ are isotones.
II. Nuclides having different atomic (Z) and mass numbers (A) but same number of neutrons (n) are called isotones.
III. ${ }^{19} \mathrm{~F}$ and ${ }^{23} \mathrm{Na}$ are isotones. The correct answer is

1 1,2 and 3 are correct
2 Only 1 and 2 are correct
3 Only 1 and 3 are correct
4 Only 2 and 3 are correct
AP-EAMCET (Engg.)-2005
Join With Us for More Updates
Structure of Atom

238563 An ion with mass number 56 contains three units of positive charge and $30.4 \%$ more neutrons than electrons. The ion is

1 ${ }_{28}^{56} \mathrm{Ni}^{3+}$
2 ${ }_{26}^{56} \mathrm{Fe}^{3+}$
3 ${ }_{27}^{56} \mathrm{Co}^{3+}$
4 ${ }_{24}^{56} \mathrm{Cr}^{3+}$
COMEDK-2016
Structure of Atom

238564 Which of the following clement represents is isoelectronic sequence?

1 $\mathrm{N}, \mathrm{O}, \mathrm{F}, \mathrm{Ne}$
2 $\mathrm{Na}^{+}, \mathrm{Mn}^{2+}, \mathrm{Al}^{3+}, \mathrm{Si}^{4+}$
3 $\mathrm{Cl}^{-}, \mathrm{Ar}, \mathrm{Ca}^{2+}, \mathrm{Ti}^{4+}$
4 $\mathrm{Be}, \mathrm{Mg}^{2+}, \mathrm{Ca}, \mathrm{Si}^{2+}$
AP-EAMCET (Medical)
Structure of Atom

238562 The masses of an electron, a proton and a neutron respectively will be in the ratio -
#[Qdiff: Easy, QCat: Theory Based, examname: \mathrm{Na}, AP EAPCET 20.08.2021 Shift-I
, 25. In the following sets of ions, which one is not isoelectronic with the rest of the species? $\mathrm{O}^{2-}, \mathrm{F}^{-}, \mathrm{Mg}^{2+}, \mathrm{Al}^{3+}, \mathrm{Ne}$
,

1 $1836.15: 1838.68$
2 $1856.15: 1858.68$
3 $1834.15: 1836.68$
4 $1846.15: 1848.68$
Structure of Atom

238571 Observe the following statements regarding isotones:
I. ${ }^{39} \mathrm{~K}$ and ${ }^{40} \mathrm{Ca}$ are isotones.
II. Nuclides having different atomic (Z) and mass numbers (A) but same number of neutrons (n) are called isotones.
III. ${ }^{19} \mathrm{~F}$ and ${ }^{23} \mathrm{Na}$ are isotones. The correct answer is

1 1,2 and 3 are correct
2 Only 1 and 2 are correct
3 Only 1 and 3 are correct
4 Only 2 and 3 are correct
AP-EAMCET (Engg.)-2005
For More Updates join with Us
Structure of Atom

238563 An ion with mass number 56 contains three units of positive charge and $30.4 \%$ more neutrons than electrons. The ion is

1 ${ }_{28}^{56} \mathrm{Ni}^{3+}$
2 ${ }_{26}^{56} \mathrm{Fe}^{3+}$
3 ${ }_{27}^{56} \mathrm{Co}^{3+}$
4 ${ }_{24}^{56} \mathrm{Cr}^{3+}$
COMEDK-2016
Structure of Atom

238564 Which of the following clement represents is isoelectronic sequence?

1 $\mathrm{N}, \mathrm{O}, \mathrm{F}, \mathrm{Ne}$
2 $\mathrm{Na}^{+}, \mathrm{Mn}^{2+}, \mathrm{Al}^{3+}, \mathrm{Si}^{4+}$
3 $\mathrm{Cl}^{-}, \mathrm{Ar}, \mathrm{Ca}^{2+}, \mathrm{Ti}^{4+}$
4 $\mathrm{Be}, \mathrm{Mg}^{2+}, \mathrm{Ca}, \mathrm{Si}^{2+}$
AP-EAMCET (Medical)
Structure of Atom

238562 The masses of an electron, a proton and a neutron respectively will be in the ratio -
#[Qdiff: Easy, QCat: Theory Based, examname: \mathrm{Na}, AP EAPCET 20.08.2021 Shift-I
, 25. In the following sets of ions, which one is not isoelectronic with the rest of the species? $\mathrm{O}^{2-}, \mathrm{F}^{-}, \mathrm{Mg}^{2+}, \mathrm{Al}^{3+}, \mathrm{Ne}$
,

1 $1836.15: 1838.68$
2 $1856.15: 1858.68$
3 $1834.15: 1836.68$
4 $1846.15: 1848.68$
Structure of Atom

238571 Observe the following statements regarding isotones:
I. ${ }^{39} \mathrm{~K}$ and ${ }^{40} \mathrm{Ca}$ are isotones.
II. Nuclides having different atomic (Z) and mass numbers (A) but same number of neutrons (n) are called isotones.
III. ${ }^{19} \mathrm{~F}$ and ${ }^{23} \mathrm{Na}$ are isotones. The correct answer is

1 1,2 and 3 are correct
2 Only 1 and 2 are correct
3 Only 1 and 3 are correct
4 Only 2 and 3 are correct
AP-EAMCET (Engg.)-2005
NEET DIGITAL LIBRARY