Question

Please tell this answer with full explanation. See the attachment below.
Question 1

Answer 1

Answer:

I am not sure but i think the answers are :

1 ) 2

Because

Explanation:

isoelectronic species electronic configuration is not considered so charge will be considered so sodium has positive charge so it will have smaller in size because of the large nuclear force of attraction

as you move from top to bottom atomic sizes but unfortunately the Nickel group has the exception so that the Nickel is smallest in size

as we move from left to right atomic size decreases so smallest is beryllium but as we move from top to bottom the atomic size increases or magnesium is bigger so as we compare beryllium and magnesium so value will be more smaller than the magnesium

Helium and Lithium Plus and hydrogen - is isoelectronic show the smallest stars that is Lithium plus it will have higher nuclear force of attraction due to which atomic radius decreases it is smallest in size

Na+ Ni Be Li +

2) also maybe second because as we move from left to right the size of cation isdecreasing

I am not sure about..... this question yrrrr

3) answer is third because as we move from top to bottom the cell is increases therefore atomic radius increases but as we move from left to right radius decreases with increase in nuclear force of attraction two magnesium will be smallest in size and rubidium will be largest