How many elements are in modern periodic table...?

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How many elements are in modern periodic table...?

(A) 118

(B) 181

(C) 108

(D) 188

✅ Correct Answer: 118

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Source: This question is taken from the Everyday Science

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In modern periodic table, how many periods are there...?

(A) 7

(B) 8

(C) 9

(D) 6

✅ Correct Answer: 7

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Source: This question is taken from the Everyday Science

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According to Mosely the chemical properties of elements are the periodic function of their...?

(A) Atomic Size

(B) Atomic Mass

(C) Atomic Radius

(D) Atomic Number

✅ Correct Answer: Atomic Number

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Source: This question is taken from the Everyday Science

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The property decides the order of elements in the modern periodic table is ____...?

(A) The number of neutrons in the nucleus

(B) The number of electrons in the outermost shell

(C) The number of protons (atomic number) in the nucleus

(D) The atomic mass of the element

✅ Correct Answer: The number of protons (atomic number) in the nucleus

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Source: This question is taken from the Everyday Science

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In modern periodic table, how many groups are there...?

(A) 12

(B) 18

(C) 7

(D) 8

✅ Correct Answer: 18

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Source: This question is taken from the Everyday Science

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What is the first element in the periodic table...?

(A) Hydrogen

(B) Helium

(C) Nitrogen

(D) Carbon

✅ Correct Answer: Hydrogen

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Which of the following letter does not represent in periodic table...?

(A) X

(B) K

(C) J

(D) N

✅ Correct Answer: J

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The position of an element in the Periodic Table is determined by its __________ number...?

(A) Electron

(B) Proton

(C) Neutron

(D) None of these

✅ Correct Answer: Proton

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Of the six noble gases in the periodic table, which is the lightest...?

(A) Nitrogen

(B) Hydrogen

(C) Helium

(D) Oxygen

✅ Correct Answer: Helium

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Vertical columns in the periodic table of elements are called as__________...?

(A) Periods

(B) Groups

(C) Rows

(D) Lanthanoids series

✅ Correct Answer: Groups

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Source: This question is taken from the Everyday Science

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The horizontal rows of the periodic table are called ______...?

(A) Groups

(B) Periods

(C) Sets

(D) Matrices

✅ Correct Answer: Periods

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Which are the only two elements on the periodic table that are liquid at room temperature...?

(A) Mercury and Bromine

(B) Carbon and helium

(C) Nitrogen and Hydrogen

(D) Oxygen and Neon

✅ Correct Answer: Mercury and Bromine

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How many rows and columns are in the modern Periodic Table...?

(A) 18 columns and 7 rows

(B) 12 columns and 9 rows

(C) 7 columns and 18 rows

(D) 25 columns and 15 rows

✅ Correct Answer: 18 columns and 7 rows

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Source: This question is taken from the Everyday Science

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What are Columns in Periodic table called...?

(A) Period

(B) Group

(C) Verticals

(D) Perpendiculars

✅ Correct Answer: Group

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Source: This question is taken from the Everyday Science

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How many rows in the modern Periodic Table...?

(A) 5

(B) 6

(C) 7

(D) None of these.

✅ Correct Answer: 7

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Source: This question is taken from the Everyday Science

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4th and 5th period in periodic table are known as...?

(A) Short period

(B) Long period

(C) Normal period

(D) Very long period

✅ Correct Answer: Long period

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Source: This question is taken from the Everyday Science

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What are rows in Periodic table called...?

(A) Period

(B) Group

(C) Verticals

(D) Perpendiculars

✅ Correct Answer: Period

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How many elements are in modern periodic table...? Mcqs

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