Home
Class 11
CHEMISTRY
Two elements X and Y contain only one el...

Two elements X and Y contain only one electron in the outer level.Element X is reactive and loses electron easily while element Y is relatively unreactive and non-corrosive.The elements X and Y respectively are

A

Cs and Li

B

Rb and Na

C

Li and Cu

D

Ag and Au

Text Solution

Verified by Experts

The correct Answer is:
C
Alkali metal and coinage element,both have valence electron one,elements of same group I(A and B). Alkali metals are highly reactive while coinage elements are very less reactive .
Promotional Banner

Topper's Solved these Questions

  • CLASSIFICATION OF ELEMENTS AND PERIODICITY

    NCERT FINGERTIPS ENGLISH|Exercise EXEMPLAR PROBLEMS|12 Videos

  • CLASSIFICATION OF ELEMENTS AND PERIODICITY

    NCERT FINGERTIPS ENGLISH|Exercise ASSERTION & REASON|15 Videos

  • CLASSIFICATION OF ELEMENTS AND PERIODICITY

    NCERT FINGERTIPS ENGLISH|Exercise Assertion And Reason|15 Videos

  • CHEMICAL BONDING & MOLECULAR STRUCTURE

    NCERT FINGERTIPS ENGLISH|Exercise Assertion And Reason|15 Videos

  • ENVIRONMENTAL CHEMISTRY

    NCERT FINGERTIPS ENGLISH|Exercise Assertion And Reason|15 Videos

Similar Questions

Explore conceptually related problems

Which of the following elements does not lose an electron easily ?

The atom of an element X contains 27 electron X is expected to be

Which of the following elements would lose an electron easily ?

The first and second ionization enthalpies and electron gain enthalpy of some elements are as given below: Which of these elements is the least reactive non-metal?

Element X has two electrons in its M shell. Identify the element.

For elements ""_19^39X Number of valence electrons

The first and second ionization enthalpies and electron gain enthalpy of some elements are as given below: Which of these elements is the most reactive non-metal?

The element X and Y in the communication system (figure) are respectively

Number of protons, neutrons and electrons in the element ._89^231 Y is.

Element X is strongly electropositive and element Y is strongly electronegative. Both are univalent. The compound formed would be