1. True or false: A. A compound of N and Cl is covalent. B. A Ca 2+ has 2wo more

ID: 941053 • Letter: 1

Question

1. True or false:

A. A compound of N and Cl is covalent.

B. A Ca2+ has 2wo more protons than a Ca atom

C. Isotopes of an element have different mass numbers

D. When reacting to form ionic compounds metals gain electrons

E. Scientific theories can never change

F. There are no molecules of ionic compounds

G. All atoms of an element must be alike

H. An H+ ion has no electrons

I. Group 8A elements have very stable electron configurations

J. Most of the elements in the period table are nonmetals

A-----------> true

B)----------> false

c) ----------->True

d)---------->False

e)----------->false

f) ----------->false

G-----------> false

H)---------->true

I) --------->True

J) --------->false

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