Structure Of The Atom Questions and Answers

0 votes

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

0 votes

2 answers

Using dot (.) and cross (x) diagram, show bonding in the compound Ammonium ion (NH+4).(N= 14, H = 1)

asked Jul 27, 2021 in Chemistry Form 2 by anonymous

0 votes

1 answer

Study the data in the table below and answer the questions. The letters do not represent the actual symbols of the elements.

asked Jul 8, 2021 in Chemistry Form 2 by anony mous

0 votes

1 answer

An element has isotopic species A and B each with a mass number 39 and 40 respectively. The percentage of A is 60% and B is 40% for an isotopic element X. Calculate the relative atomics mass of X.

asked Jul 7, 2021 in Chemistry Form 2 by anony mous

0 votes

1 answer

The atomic number of element A is 11 and that of B is 8

asked Jul 7, 2021 in Chemistry Form 2 by anony mous

0 votes

1 answer

Study the table below and use it to answer the questions that follow. (The letters do not represent the actual symbols of the elements). Element S P Q R T Atomic Number 5 20 3 18 5 Atomic mass 10 40 7 40 11 Select two letters that represent a pair of isotopes

asked Jul 5, 2021 in Chemistry Form 2 by anonymous

0 votes

1 answer

Element A has mass number 40 and 21 neutrons

asked Jun 21, 2021 in Chemistry Form 2 by anony mous

To see more, click for the full list of questions or popular tags.

...