Chemistry Test 1 (XI) KSA

An ionic bond is formed when

• Valence electrons are shared.

• Valence electrons surround the cations.

• Valence electrons are transferred between atoms.

• Valence electrons are completely transferred between two metals.

What is a valence electron?

• an electron that is found in the outermost shell of an atom

• an electron found in the innermost shell of an atom

• an electron found in the middle shell

• an electon found in the nucleus

What is the number of valence electrons of Neon?

• 6

• 7

• 8

• 9

The electronic configuration of Boron (Z=5) is:

• K³

• K¹L⁴

• K⁴L¹

• K²L³

What is the electronic configuration for Phosphorus atom ?

• 1s²2s²2p⁶3s²3p³

• 1s²2s²2p⁶3s²3p⁵

• 1s²2s²2p³

• 1s²2s²2p⁶3s²

Which of the following is the electronic configuration for Mg²⁺ ion?

• 1s² 2s² 2p⁶

• 1s² 2s² 2p⁶ 3s² 3p⁶

• 1s² 2s² 2p⁶ 3s² 3p²

• 1s² 2s² 2p⁶ 3s²

Which one of the following is the electronic configuration of the bromine atom?

• 1s²2s²2p⁶3s²3p⁶3d¹⁰4s¹4p⁶

• 1s²2s²2p⁶3s²3p⁶3d¹⁰4s²4p⁷

• 1s²2s²2p⁶3s²3p⁶3d¹⁰4s²4p⁵

• 1s²2s²2p⁶3s²3p⁶3d¹⁰4s²4p⁶

The number of electrons in the 3d orbital of the atom of atomic number 27 is

• 5

• 6

• 7

• 10

As you move left to right across a period, ionization energy

• increases

• decreases

• says the same

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

What group is highlighted here on the periodic table (Group 2A)?

• Noble Gases

• Halogens

• Alkali Metals

• Alkaline Earth Metals

Tags

NGSS.HS-PS1-1