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Which of the following atoms A, B, C or D would form an ion with a charge of +1?
It has an electronic configuration of a noble gas
6
Nucleus and electron energy levels
Proton no. 17 Neutron no. 18 Electron no. 17
The nucleus must always contain protons and neutrons
Density
9
Atom C; Mass no. 23; Atomic no. 1
The atomic weight of carbon( atomic number 6) is 12. How many electrons does it have?
It has an electronic configuration of a noble gas
6
Nucleus and electron energy levels
Proton no. 17 Neutron no. 18 Electron no. 17
The nucleus must always contain protons and neutrons
Density
9
Atom C; Mass no. 23; Atomic no. 1
Which of the following statements is not true about atoms?
It has an electronic configuration of a noble gas
6
Nucleus and electron energy levels
Proton no. 17 Neutron no. 18 Electron no. 17
The nucleus must always contain protons and neutrons
Density
9
Atom C; Mass no. 23; Atomic no. 1
The two main parts of an atom are its:
It has an electronic configuration of a noble gas
6
Nucleus and electron energy levels
Proton no. 17 Neutron no. 18 Electron no. 17
The nucleus must always contain protons and neutrons
Density
9
Atom C; Mass no. 23; Atomic no. 1
Which of the following elements is a negative ion?
It has an electronic configuration of a noble gas
6
Nucleus and electron energy levels
Proton no. 17 Neutron no. 18 Electron no. 17
The nucleus must always contain protons and neutrons
Density
9
Atom C; Mass no. 23; Atomic no. 1
An atom has an atomic number of 11. Which of the following statements is true?
It has an electronic configuration of a noble gas
6
Nucleus and electron energy levels
Proton no. 17 Neutron no. 18 Electron no. 17
The nucleus must always contain protons and neutrons
Density
9
Atom C; Mass no. 23; Atomic no. 1
A beryllium atom has 4 protons,5 neutrons,4 electrons. What is the mass no. of this atom?
It has an electronic configuration of a noble gas
6
Nucleus and electron energy levels
Proton no. 17 Neutron no. 18 Electron no. 17
The nucleus must always contain protons and neutrons
Density
9
Atom C; Mass no. 23; Atomic no. 1
Which of the following properties is the same for the isotopes of an element?
It has an electronic configuration of a noble gas
6
Nucleus and electron energy levels
Proton no. 17 Neutron no. 18 Electron no. 17
The nucleus must always contain protons and neutrons
Density
9
Atom C; Mass no. 23; Atomic no. 1
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