Ch 3 Atomic Structure Revision

Which of the following is an isotopes of hydrogen?

• 
• 
• 

Which of the following about nitrogen is true? There can be more than 1 answer.

• The electronic configuration is 2,8,4

• There are 7 protons in each atom of nitrogen.

• There are 7 electrons in each atom of nitrogen.

• There are 7 neutrons in each atom of nitrogen.

Which of the following statement about Cl-35 and Cl-37 is true? There could be more than one answer.

• There are both isotopes.

• Cl-35 has 18 neutrons while Cl-37 has 20 neutrons.

• Both has 17 protons.

• Both has the same number of neutrons

Which of the following is the definition of an isotope?

• Isotopes are elements with the same number of electrons and different number of protons.

• Isotopes are elements with the same number of protons and different number of electrons.

• Isotopes are elements with the same number of protons and different number of neutrons.

• Isotopes are elements with the same number of neutrons and different number of protons.

The electronic configuration of Ca is?

• 2,8,8,2

• 2,8,8,8,8,6

• 2,8,8

What is the relative mass of an electron?

• 1

• -1

• 1/1840

• +1

What is the atomic mass of this atom?

• 1

• 3

• 4

• 7

What makes up the nucleus of an atom?

• proton and electron

• proton and neutron

• electron and neutron

• proton, electron and neutron

Which statement is true about the following atom?

• Boron has 5 neutrons.

• Boron has 11 neutrons.

• Boron has 11 electrons.

• Boron has 5 protons.

Which of the following is true about this atom?

• Li has 4 protons.

• Li has 4 neutrons.

• Li has 4 electrons

• Li has 7 protons.