Eka-aluminium and Eka-silicon are known as:
Correct answer: A. Gallium and Germanium
- A. Gallium and Germanium
- B. Aluminium and Silicon
- C. Iron and Sulphur
- D. Proton and Silicon
Explanation
Dmitri Mendeleev predicted the existence and properties of several undiscovered elements. He used the prefix "Eka-" (Sanskrit for "one") to name the elements directly below known ones in his periodic table. Eka-aluminium was his name for the element below aluminum (Gallium), and Eka -silicon was for the element below silicon (Germanium).
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
About Periodic Properties and Trends
Periodic properties arise from electron configuration and effective nuclear charge, producing trends in atomic and ionic radius, ionization energy, electron affinity, electronegativity, metallic character and reactivity. Comparisons run across periods and down groups, with attention to common exceptions. The topic also relates these trends to the behavior of s-block and p-block elements.
Practise s-Block and p-Block Elements
1,359 free s-Block and p-Block Elements MCQs from Chemistry, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Chemistry questions like this
Chemistry is on 14 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
More Periodic Properties and Trends questions
The false statement about lithium is:
K+ ,Cl- ,Ca2+ and S-2 are isoelectronic. The decreasing order of their size is :
(A), (B) and (C) are elements in the third period. The oxide of(A) is ionic, that of (B) is amphoteric and that of (C) is a giant molecule (covalent network). (A), (B) and (C) have atomic numbers in the order:
According to modern periodic law, variations in the properties of elements is related to their:
An element having electronic configuration [Ar] 3d⁵4s¹ belongs to :
Which one of the following is not the representative element?