Which one of the following set of ions represents the collection of isoelectronic species?
[Atomic numbers: F = 9; Cl = 17; Na = 11; Mg = 12; Al = 13; K = 19; Ca = 20; Sc = 21]

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is A
$K^{+} (19 - 1 = 18 ¯ e); C a^{+ 2} (20 - 2 = 18 ¯ e); S c^{+ 3} (21 - 3 = 18 ¯ e); C l^{-} (17 + 1 = 18 ¯ e)$

Suggest Corrections

Similar questions

Which of the following sets contain only isoelectronic ions?
(i) $Z n^{2 +}, C a^{2 +}, G a^{3 +}, A l^{3 +}$

(ii) $K^{+}, C a^{2 +}, S c^{3 +}, C l^{-}$

(iii) $P^{3 -}, S^{2 -}, C l^{-}, K^{+}$

(iv) $T i^{4 +}, A r, C r^{3 +}, v^{5 +}$

Q. Which of the following species are isoelectronic?

i) N e i i) O^{2 -} i i i) M g^{2 +} i v) F

v) A l^{3 +} v i) C l^{-} v i i) K v i i i) N a

Question 17
Arrange the following elements in the order of their decreasing metallic character
Na, Si, Cl, Mg, Al

(a) Cl > Si >Al > Mg >Na
(b) Na >Mg >Al >Si > Cl
(c) Na > Al > Mg > Cl > Si
(d) Al > Na> Si > Ca> Mg

Q. Which one of following species are isoelectronic?

S^{2 -}, N a^{+}, C a^{2 +}, C l^{-}

Q. Which of the following species are isoelectronic?

i) N e i i) O^{2 -} i i i) M g^{2 +} i v) F

v) A l^{3 +} v i) C l^{-} v i i) K v i i i) N a

Join BYJU'S Learning Program

Which one of the following set of ions represents the collection of isoelectronic species? [Atomic numbers: F = 9; Cl = 17; Na = 11; Mg = 12; Al = 13; K = 19; Ca = 20; Sc = 21]

The correct option is A K+(19−1=18¯e);Ca+2(20−2=18¯e);Sc+3(21−3=18¯e);Cl−(17+1=18¯e)

Which one of the following set of ions represents the collection of isoelectronic species?
[Atomic numbers: F = 9; Cl = 17; Na = 11; Mg = 12; Al = 13; K = 19; Ca = 20; Sc = 21]

The correct option is A
$K^{+} (19 - 1 = 18 ¯ e); C a^{+ 2} (20 - 2 = 18 ¯ e); S c^{+ 3} (21 - 3 = 18 ¯ e); C l^{-} (17 + 1 = 18 ¯ e)$