Structure Of The Atom And The Periodic Table Questions and Answers

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1 answer

Hydrogen Sulphide gas was bubbled into two solutions of metallic nitrates as shown in the flow diagram below

asked Aug 17, 2021 in Chemistry Form 2 by anonymous

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1 answer

Determine the number of neutrons in 1818O

asked Aug 17, 2021 in Chemistry Form 2 by anonymous

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1 answer

What are isotopes?

asked Aug 17, 2021 in Chemistry Form 2 by anonymous

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1 answer

Balance the following chemical equations

asked Aug 6, 2021 in Chemistry Form 2 by anonymous

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1 answer

Two elements M and N have atomic numbers 17 and 20 respectively. Write the formula of the compound formed when M and N react.

asked Aug 5, 2021 in Chemistry Form 2 by anonymous

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1 answer

The table below shows the atomic numbers of four elements W,X,Y and Z

asked Aug 5, 2021 in Chemistry Form 2 by anonymous

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2 answers

Elements X and Y have atomic numbers 11 and 17 respectively. Which one of the elements is a metal? Give a reason for your answer.

asked Aug 5, 2021 in Chemistry Form 2 by anonymous

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1 answer

An element B consists of three isotopes of mass, 28, 29 and 30 and percentage abundances of 92.2, 4.7 and 3.1 respectively. Show that the relative atomic mass of element is 28.11

asked Aug 5, 2021 in Chemistry Form 2 by anonymous

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1 answer

An element, A, has 30 protons and 35 neutrons. What is

asked Aug 5, 2021 in Chemistry Form 2 by anonymous

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1 answer

Element X has two isotopes. Two thirds of 3316X and one-third 3016X. What is the relative mass of element X?

asked Aug 5, 2021 in Chemistry Form 1 by anonymous

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1 answer

The table below shows some properties and electronic arrangements of common ions of elements represented by letters P to X. Study the information in the table and answer the questions that follow

asked Aug 5, 2021 in Chemistry Form 1 by anonymous

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1 answer

Define the following: Ion

asked Aug 5, 2021 in Chemistry Form 2 by anonymous

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1 answer

Give the valency of each of the elements or radical in the following chemical compounds.

asked Aug 4, 2021 in Chemistry Form 2 by anony mous

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1 answer

The table below gives the number of protons and neutrons in element G,H,I and J.

asked Aug 4, 2021 in Chemistry Form 2 by anony mous

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3 answers

The diagram below represents part of the periodic table use it to answer the questions that follow.

asked Aug 4, 2021 in Chemistry Form 2 by anony mous

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1 answer

X+ is an ion with electronic configuration 2,8,8. Identify element X

asked Aug 4, 2021 in Chemistry Form 2 by anony mous

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1 answer

The table below shows the relative atomic masses and the percentage abundance of the isotopes T1 and T2 of element T

asked Aug 4, 2021 in Chemistry Form 2 by anony mous

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1 answer

write the electronic configuration of calcium (atomic number 20) and magnesium (atomic number 12)

asked Aug 4, 2021 in Chemistry Form 2 by anony mous

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1 answer

An atom of an element has the electronic configuration 2.8.2

asked Jul 28, 2021 in Chemistry Form 2 by anony mous

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1 answer

An element y has the electronic configuration of 2:8:5 which period of the periodic table does, the element belong

asked Jul 27, 2021 in Chemistry Form 2 by monicahwangombe

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