Non-metallic elements of the s-block of the periodic table are

Calcium (Ca) and Sodium (Na)

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Potassium (K) and Calcium (Ca)

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Calcium (Ca) and Hydrogen (H)

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Hydrogen (H) and Helium (He)

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Solution

The correct option is D Hydrogen (H) and Helium (He)
Only two elements in the s-block i.e., Hydrogen(H) and Helium(He) are gaseous rest all the elements are metals in the s-block of the periodic table.

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Similar questions

Smita studied about the Modern Periodic Table. She placed hydrogen, lithium, sodium, and calcium in the same group in the periodic table. However, her teacher told her that she has placed one element incorrectly in the periodic table.

(Atomic numbers of H, Li, Na, and Ca are 1, 3, 11, and 20 respectively)

Which element has been placed incorrectly by Smita?

C a + 2 H_{2} O \to C a (O H)_{2} + H_{2}

What volume of hydrogen gas is produced from

20.0 g

of calcium and

20.0 g

of water?

Q. With reference only to the periodic table, indicate which of the atom among Bi, S, Ba, As and Ca is most non-metallic?

Observe the table and identify metals and non-metals. Select the correct option.
$\begin{matrix} Sl.No & Set-1 & Set-2 1. & Sodium(Na) & Oxygen(O) 2. & Magnesium(Mg) & Chlorine(Cl) 3. & Iron(Fe) & Helium(He) 4. & Gold(Au) & Sulphur(S) 5. & Calcium(Ca) & Carbon(C) \end{matrix}$

Q. An element 'X' belongs to period "3" and group "16" of the Modern Periodic Table.

(a) Determine the number of valence electrons and the valency of 'X'.

(b) Molecular formula of the compound when 'X' reacts with hydrogen and write its electron dot structure.

(c) Name the element 'X' and state whether it is metallic or non-metallic.

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Non-metallic elements of the s-block of the periodic table are

The correct option is D Hydrogen (H) and Helium (He)Only two elements in the s-block i.e., Hydrogen(H) and Helium(He) are gaseous rest all the elements are metals in the s-block of the periodic table.

The correct option is D Hydrogen (H) and Helium (He)
Only two elements in the s-block i.e., Hydrogen(H) and Helium(He) are gaseous rest all the elements are metals in the s-block of the periodic table.