When an atom loses electron, it forms a/an ................................

• positively charged ion

• a negatively charged ion

• isotope

Tags

NGSS.HS-PS1-2

Isotopes are atoms of the same element with

• same number of proton and neutron but different number of electrons

• same number of proton and electrons but different number of neutrons

• same number of electrons and neutron but different number of protons

Tags

NGSS.HS-PS1-8

Which of the following is electron configuration for an atom with proton number 9

• 2,7

• 2,8

• 2,9

Tags

NGSS.HS-PS1-1

What is the electron configuration for atom X?

• 2,4

• 2,5

• 7

• 2,8

Tags

NGSS.HS-PS1-1

What is the proton number of lithium?

• 3

• 4

• 7

Tags

NGSS.MS-PS1-1

Which particles make up the nucleus of an atom?

• electron, neutron and proton

• electron and neutron

• neutron and proton

• proton only

Tags

NGSS.HS-PS1-8

A particle has 7 protons, 7 neutrons and 10 electrons. This particle is a/an

• atom

• ion

• isotope

• element

Tags

NGSS.MS-PS1-1

An atom has an electron configuration of 2,8,7. What will be the charge of the ion that it will form?

• 1+

• 2+

• 1-

• 2-

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

What is the relative charge of a proton?

• +1

• -1

• 0

Tags

NGSS.HS-PS3-5

What is the relative charge of a neutron?

• +1

• -1

• 0