Answer:
Answer: (b) F
Explanation:
Sodium has 1, magnesium has 2 and Aluminium has 3 electrons in its outermost shell whereas Fluorine has 7 electrons in its outermost shell hence Fluorine does not lose electrons easily.
The electronic configuration of fluorine is 2,7.
Fluorine is the ninth element with a total of 9 electrons.
The first two electrons will go in the 1s orbital.
The next 2 electrons for F go in the 2s orbital.
The remaining five electrons will go in the 2p orbital. Therefore the F electron configuration will be 1s22s22p5.
If we have a neutral atom, then it has the same number protons and neutrons.
The number protons and neutrons for neutral atom shows atomic number.
"A neutral atom has an atomic number of 20" means that atom has 20 protons (that give charge "+ 20" ) and 20 electrons (that give charge "-20").
Answer is 20 electrons.
Answer:
It is refracted out, B
Explanation:
When the light travels through the prism, it refracts the colors out of it. In which a rainbow sort coloration is released from the other side.
In order to compare the two elements, one must take note of
its placement in the periodic table. As you go down a group in the periodic
table, the metallic property increases. Thus in the problem, Antimony has a
more metallic behavior than Arsenic so that already crosses out statement A and
B from the choices since it is untrue. The number of electron shells meanwhile
decreases as you go down the group. Therefore the answer would be Arsenic has a
more nonmetallic behavior than antimony because arsenic’s atoms have fewer
electron shells.
HOPE THIS HELPS
