Atomic Structure/Bonding/Periodicity

Front

Which of the elements forms a chloride which is ionic in nature? Options: I, II, III, IV

Back

III

Front

The arrangements of electrons in atoms X and Y are 2,8,5 and 2,8,6 respectively. Which of the following options represents X and Y? Options: A, B, C, D

Back

B

Front

Formation of a metallic bond

Back

Cations are held together by a sea of mobile electrons.

Front

Which element does NOT form simple ions by gaining or losing electrons? Options: Carbon, Copper, Calcium, Chlorine

Back

Carbon

Front

Which element has 7 electrons in its outer shell?

Back

Chlorine

Front

An atom has 20 electrons. When it ionizes, it has the same electronic configuration as: neon, argon, sodium, calcium

Back

argon

Front

Which of the following statements BEST describes the difference between an atom and an ion?

Back

An atom contains equal numbers of protons and electrons whereas an ion contains unequal numbers of protons and neutrons

Front

The mass number of an element is the number of

Back

neutrons and protons in an atom of the element

Front

What results from 'Ionic bond formation'?

Back

Donation of electrons from a metal to a non-metal to achieve stability

Front

An ion with a single negative charge may be converted into a neutral atom by

Back

losing an electron