The atomic numbers of elements A,B,C and D ar | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(C) Given,atomic number of $B = Z$. Since $B$ is a noble gas,it belongs to group $18$.The atomic number of $A = Z-1$,which corresponds to a halogen (g

Vedclass · Accepted Answer

$(1)$ and $(3)$

Vedclass · Answer

(C) Given,atomic number of $B = Z$. Since $B$ is a noble gas,it belongs to group $18$.The atomic number of $A = Z-1$,which corresponds to a halogen (group $17$).The atomic number of $C = Z+1$,which corresponds to an alkali metal (group $1$).The atomic number of $D = Z+2$,which corresponds to an alkaline earth metal (group $2$).Statement $(1)$: Halogens $(A)$ have high electron affinity. This is correct.Statement $(2)$: $C$ is an alkali metal,so it exists in $+1$ oxidation state,not $+2$. This is incorrect.Statement $(3)$: $D$ is an alkaline earth metal (group $2$). This is correct.Therefore,statements $(1)$ and $(3)$ are correct.

The atomic numbers of elements $A$,$B$,$C$ and $D$ are $Z-1$,$Z$,$Z+1$ and $Z+2$,respectively. If $B$ is a noble gas,choose the correct statements from the following:
$(1)$ $A$ has high electron affinity
$(2)$ $C$ exists in $+2$ oxidation state
$(3)$ $D$ is an alkaline earth metal

Similar Questions

Identify the plant shown in the given figure.

Match the following and choose the correct answer:-
$(A)$ Implantation $(i)$ Vagina
$(B)$ Capacitation (ii) Ovary
$(C)$ Folliculogenesis (iii) Uterus
$(D)$ Fertilisation (iv) Fallopian tube

Which group includes microorganisms that lack a defined nucleus but contain genetic material (nucleoid)?

Molar heat capacity of water in equilibrium with ice at constant pressure is

Vedclass Test Series

Exam Paper Generator

Online Exam Module

The atomic numbers of elements $A$,$B$,$C$ and $D$ are $Z-1$,$Z$,$Z+1$ and $Z+2$,respectively. If $B$ is a noble gas,choose the correct statements from the following:$(1)$ $A$ has high electron affinity$(2)$ $C$ exists in $+2$ oxidation state$(3)$ $D$ is an alkaline earth metal