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प्रश्न
Match the symbols of metallic elements – with their correct combining power or capacity.
(a) K
(b) Zn
(c) Al
(d) Na
(e) Ca
Combining power or capacity – A : 3 ; B : 2 ; C : 1. (positive valencies)
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उत्तर
(a) K — Valency-1 (C)
(b) Zn — Valency-2 (B)
(c) Al — Valency-3 (A)
(d) Na — Valency-1 (C)
(e) Ca — Valency-2 (B)
संबंधित प्रश्न
Define atomic mass unit. What is its symbol ?
Give two examples of the following:
Solid + Liquid mixture
Give a reason why elements are tabulated in a table called the ‘Periodic table’.
Give the symbol and the number of atoms of the following elements present in zinc chloride.
State the type of element for the following:
Fluorine
State the type of element for the following:
Calcium
Give the symbol of the following element:
Hydroxide
Write the radical of the following valency:
Sodium
Write the radical of the following valency:
Nitrate
The first letter of a symbol is always written as a ______ letter and the second letter as a ______ letter.
