Question

Which of the following species have No Neutron:
(a) Na+ (b)S2-
(c) H- (d)H+​

Answer 1

Answer:

18                    so please don't forgot to mark brain list and thank

Explanation:

Na⇒1s  

2

,2s  

2

2p  

6

,3s  

1

 

Na  

+

⇒1s  

2

,2s  

2

2p  

6

 

similarly for Mg  

2+

⇒1s  

2

,2s  

2

2p  

6

 

Na  

+

,Mg  

2+

, are isoelectronic species. They contain 10 electrons each.

S  

2−

⇒1s  

2

,2s  

2

2p  

6

,3s  

2

3p  

6

 

Ar⇒1s  

2

,2s  

2

2p  

6

,3s  

2

3p  

6

 

K  

+

⇒1s  

2

,2s  

2

2p  

6

,3s  

2

3p  

6

 

Ca  

2+

⇒1s  

2

,2s  

2

2p  

6

,3s  

2

3p  

6

 

Ar,S  

2−

,Ca  

2+

andK  

+

 are isoelectronic species. They contain 18 electrons each.

Answer 2

Option D H + ion is the answer remaining options have neutrons in them

Hydrogen has no neutron, deuterium has one, and tritium has two neutrons. The isotopes of hydrogen have, respectively, mass numbers of one, two, and three. Their nuclear symbols are therefore 1H, 2H, and 3H. The atoms of these isotopes have one electron to balance the charge of the one proton.