Answer:
See below
Explanation:
This is a simple reaction.
Calcium and chlorine molecule are combined to get calcium chloride.
Ca + Cl₂ → CaCl₂
Hope this helped!
c. Sodium
b. Chromium
d. Iron
The mass of an atom comes from the protons and neutrons that are found in the nucleus. The number of protons is the atomic number of an element. To find the number of neutrons, subtract the atomic number from the mass of an atom. If the mass number of Fe2+ is 56. The atomic number is 26, so 56 – 26 equals 30 neutrons.
Answer:
Simply put B.) 30
Explanation:
Answer: 1 x
Explanation: You can see that the only non-zero digit is 1, so it is 1 x 1,000 has 3 zeroes to the left of the period, so it is1x . Quite simple!
b. attractions between its atoms.
c. the number of valence electrons in atoms of the element.
d. the ratio of protons to neutrons in atoms of the element
The tendency of an element to react is closely related to the number of valence electrons in atoms of the element (answer C).
Explanation
Valence electrons are outer shell electrons of an atom.They govern the bonding behavior of an element.
when element react to form compound, valence electron are involved.
Valence electrons are involved in a reaction either by sharing among atoms or may be transferred from one atom to another.
For example in formation of NaCl bond there is transfer of valence electron between Na and Cl. Na donate 1 valence electron while Cl accept 1 electron to form NaCl