Yes the answer is 1s22s22p63s23p64s23d5
Explanation:
Z = atomic mass of the element and , A = atomic mass of the element .
a) Z = 11, A = 23
Element = Sodium
symbol: ²³₁₁Na .
b) Z = 28, A = 64
Element = Nickel
symbol: ⁶⁴₂₈Ni .
c) Z = 50, A = 115
Element = tin
symbol: ¹¹⁵₅₀Sn .
d) Z = 20, A = 42
Element = Calcium
symbol: ⁴²₂₀Ca .
There are O-H bonds in H2O. They have the intramolecular force of polar covalent bond.
B. It has a negative charge and much less mass than a proton.
Answer:
B
Explanation:
to conduct scientific exploration of the moon
